[2]Committee on Science, Engineering, and Public Policy [1991]. Policy Implications of Greenhouse Warming, p. 24.
[3]Healy [1994].
[4]Policy Implications of Greenhouse Warming, p. 18.
[5]Crowley & North [1991]: 82-83.
[6]Levenson [1989,]: 25.
[7]Huggett [1991]: 74.
[8]Crowley & North [1991]: 117.
[9]Gore [1992]: 62 & 63.
[10]Schelling [1992]: 6.
[11]Parry et al. [1988] as summarized in Kane [1991]: 7.
[12]Kauppi, et al. [1992]: 70-74.
[13]Letter to the editor, Wall Street Journal, February 16, 1990.
[14]Kane et al. [1991]
[15]Mendelsohn,[1994]: 753-771.
[16]Van Kooten [1990]: 704.
[17]Rind [1993]: 39-49.
[18]Frenzel [1993]: 7.
[19]Flohn [1983]: 404.
[20]Broccoli [1994]: 282.
[21]Giles[1990]: 23.
[22]Frenzel [1993]: 8.
[23]Crowley [1993]: 23.
[24]Frenzel [1993]: 10.
[25]Frenzel [1993]: 11.
[26]Crowley [1993]: 21.
[27]Crowley [1993]: 25.
[28]Rind [1993]: 41.
[29]Webb III, et al.. [1993]: 517
[30]Webb III, et. al. [1993]: 521.
[31]Webb III, et. al. [1993]: 523.
[32]Webb III, et. al. [1993]: 525.
[33]Morley and Dworetzky [1993]: 133-134.
[34]McGlone et al. [1993]: 311.
[35]McGlone et al. [1993]: 313.
[36]Genetic support for the 200,000 years ago estimate comes from Vigilant,et al. [1991]: 1503-1507. The oldest human remains found by archeologists are from 40,000 years ago.
[37]Crowley & North [1991]: 116.
[38]Crowley & North [1991]: 20.
[39]Ammerman and Cavalli-Sforze [1984]: 4.
[40]Boserup [1981]: 39-40.
[41]Lamb [1968]: 6.
[42]Wendland & Bryson [1974].
[43]Lamb [1968]: 12.
[44]Lamb (1988): 30.
[45]Ammerman & Cavalli-Sforza [1984]: 28.
46Ammerman & Cavalli-Sforza [1984]: 41.
[47]Cohen.[1977]: 1.
[48]Cohen [1989]: 56.
[49]Boserup [1981]: 34.
[50]Kremer [1993]: 683.
[51]Kremer [1993]: 681-716.
[52]Boserup [1981]: 36-37.
[53]Boserup [1981]: 38.
[54]Cohen [1989]: 112.
[55]Cohen [1989]: 113.
[56]Cohen [1989]: 114-115.
[57]Cohen [1989]: 119.
[58]Cohen [1989]: 119.
[59]Lamb (1988): 22.
[60]Giles, [1990]: 133.
[61]Claiborne [1970]: 324.
[62]Lamb [1982]: 120.
[63]Gore [1992]: 76.
[64]Lamb [1988]: 21.
[65]Giles [1982]: 115-116.
[66]Lamb [1977]: 270.
[67]Lamb [1977]: 133.
[68]Lamb [1968]: 61.
[69]Lamb [1982]: 131.
[70]Lamb [1982]: 131.
[71]Lamb [1968]: 61.
[72]Lamb [1968]: 62.
73Claiborne [1970]: 243.
74Ammerman & Cavalli-Sforze [1984]: 16.
75Ammerman & Cavalli-Sforza [1984]: 14-16.
76Ammerman & Cavalli-Sforze [1984]: 16.
[77]Lamb [1977]: 256.
[78]Lamb [1982]: 126.
[79]Lamb [1977]: 254.
[80]Limb [1982]: 124.
[81]Ko-chen [1973]: 228 & 229.
[82]Lamb [1977]: 251.
[83]Lamb [1977]: 389.
[84]Claiborne [1970]: 295.
85Lamb [1977]: note 1, p. 257.
[86]Lamb [1982]: Fig. 43, p. 118.
[87]Lamb [1988]: 22.
[88]Lamb [1988]: 23.
[89]Lamb [1977]: 419.
[90]Carpenter [1966]
[91]Lamb [1977]: 257.
[92]Lamb [1977]: 258.
[93] Claiborne [1970]: 344-347.
[94]Lamb [1977]: 250.
[95]Lamb [1968]: 63.
[96]Lamb [1977]: 261.
[97]Cheetham [1981]: 18 & 20.
[98]Cheetham [1981]: 26.
[99]Keegan [1993]: 288.
[100]Lamb [1968]: 64.
[101]Lamb [1968]: 64-65.
[102]Lamb [1968]: 8.
[103]Lamb [1977]: 271.
[104]Bartlett [1993]: 162.
[105]Lamb [1977]:, 427.
[106]Lamb [1977]: 429.
[107]Lamb [1977]: 133.
[108]Lamb [1977]: 439.
[109]Lamb [1977]: 136.
[110]Stine [1994]: 546-549.
[111]Lamb [1977]: 435.
[112]Chu [1973]: 235.
[113]Chu [1973]: 237 & 238.
[114]Chao [1986]: 203.
[115]Lamb [1977]: Tables 17.3 and 17.4, pp. 443 & 447.
[116]Chu [1973]: 239-240.
[117]Keegan [1993]: 149.
[118]Bartlett [1993]: 155 from Hallam [1965]: 166.
[119]Bartlett [1993]: 162.
[120]Pirenne [n.d., c. 1938]: 59.
[121]Pirenne [n.d., c. 1938]: 12.
[122]Donkin, [1973]: 90.
[123]Bartlett [1993]: 48.
[124]Bartlett [1993]: Chapter 6.
[125]Bartlett [1993]: 48.
[126]Lamb [1977]: 437.
[127]Claiborne [1970]: 348-364.
[128]Pirenne [n.d.]: 76 and Bartlett [1993]: 114-115.
[129]Bartlett [1993]: 115.
[130]Cheetham [1981]: 37.
[131]Cheetham [1981]: 28.
[132]Cheetham [1981]: 85.
[133]Cheetham,[1981]: 35-36.
[134]Van Doren [1991]: 111.
[135]Gimpel [1983]: Table p. 68.
[136]Gimpel [1983]: 69.
[137]Bartlett [1993]: 2.
[138]Donking [1973]: 110-111.
[139]Pirenne [n.d.]: 50.
[140]Pierenne [n.d.]: 103.
[141]Lamb [1977]: 277.
[142]Lamb [1977]: 278-279.
[143]Lamb [1977]: 279.
[144]Keegan, [1993]: 291.
[145]Lamb [1968]: 8.
[146]Langer [1968]: 269.
[147]Langer [1968]: 206 & 286.
148Carruth [1993]: 161.
149Carruth [1993]: 134, 170, & 171.
[150]McNeill [1963]: 559.
[151]Lamb [1977]: 248.
[152]Lamb [1977]: 252.
[153]Lamb [1988]: 159.
[154]Lamb [1977]: 252.
[155]Lamb [1977]: 252.
[156]Chao [1986]: 219.
[157]Chao [1986]: 203.
[158]Chao [1986]: 195.
[159]Carruth [1993]: 151.
[160]Langer [1968]: 366.
[161]Kesseler [1994]: A17.
[162]Langer [1968]: 367.
[163]Claiborne [1970]: 288.
[164]McNeill [1963]: 559.
[165]Carruth [1993]: 151.
[166]Langer [1968]: 372.
[167]Deland [1987]: 9, 29-32.
[168]Lamb [1977]: 430-431.
[169]Cook et al. [1991): 1267.
[170]Lamb [1988]: 42.
[171]Lamb [1988]: 42.
[172]Lamb [1977]: 249.
[173]Lamb [1982]: 177.
[174]Gore [1992]: 78.
[175]Carruth [1993]: 142-143.
[176]Langer [1968]: 386.
[177]Carruth [1993]: 168.
[178]Lamb [1977]: 463.
[179]Lamb [1988]: 166.
[180]Lamb [1977]: Fig. 17.12, p. 450.
[181]Lamb [1977]: Fig. 17.13, p. 452.
[182]Lamb [1977]: 461-462.
[183]Lamb [1977]: 465-466.
[184]Lamb [1977]: 246.
[185]Lamb [1977]: 432.
[186]Fairbridge [1984]: 181-190.
[187]Lamb [1988]: 158.
[188]Lamb [1977]: 467.
[189]Lamb [1977]: 451-452.
[190]Lamb [1988]: 159.
[191]Monastersky [1994]: 310.
[192]Lamb [1988]: 159.
[193]Lamb [1977]: 7.
[194]Donkin [1973]: 91.
[195]Lamb [1977]: 454.
[196]Donkin [1973]: 90.
[197]Lamb [1977]: 266.
[198]Lamb [1977]: 7.
[199]Lamb [1977]: 454.
[200]Lamb [1977]: 471.
[201]Langer [1968: 317.
[202]Lamb [1982]: 189.
[203]Lamb [1988]: 32.
[204]Lamb [1988]: 36.
[205]Lamb [1977]: 456
[206]Lamb [1977]: 262.
[207]Lamb [1988]: 165.
[208]Lamb [1977]: 265 taken from Thorarinsson [1961].
[209]Gimpel [1983]: 150.
[210]Gimpel [1993]: 151.
[211]Pirenne [n.d.]: 134.
[212]Lamb [1988]: 153-54, 155.
[213]Lamb [1988]: 156 & 160.
[214]Lamb [1977]: 469.
[215]Lamb [1977]: 471.
[216]Cheetham [1981]: 98 & 99.
[217]Cheetham [1981]: 101.
[218]Kremer, [1993]: Appendix A, p. 714 & Chao [1986]: Table 9.2, p. 218.
[219]Rosenberg & Birdzell, Jr. [1986]: 54.
[220]Ladurie [1971]: 64-79.
[221]Carruth, [1993]: 166 & 168.
[222]Cline [1992]: 8.