ARE THE 1ST AMERICAN FARMERS GETTING YOUNGER

[1] Bar-Yosef O., 1992, TRANSITIONS AGR PREH, P21

[2] Beadle G. W., 1977, Origins of Agriculture., P615

[3] STUDIES IN ARCHAEOLOGICAL MAIZE .1. THE WILD MAIZE FROM SAN-MARCOS CAVE REEXAMINED [J]. AMERICAN ANTIQUITY, 1990, 55 (03) : 500 - 511

[4] Blake Michael, 1992, TRANSITIONS AGR PREH, P133

[5] Byers D.S., 1967, PREHISTORY TEHUACAN, V1

[6] EVIDENCE FOR EARLY MAIZE (ZEA-MAYS) FROM THE ICE-HOUSE BOTTOM SITE, TENNESSEE [J]. AMERICAN ANTIQUITY, 1987, 52 (02) : 352 - 354

[7] ACCELERATOR RADIOCARBON DATING OF EVIDENCE FOR PREHISTORIC HORTICULTURE IN ILLINOIS [J]. NATURE, 1984, 308 (5958) : 443 - 446

[8] CUTLER HC, 1967, PREHISTORY TEHUACAN, P212

[9] DELLEHAY TD, 1989, MONTE VERDE LATE PLE

[10] EARLY CULTURAL EVIDENCE FROM MONTE-VERDE IN CHILE [J]. NATURE, 1988, 332 (6160) : 150 - 152

[1] Bar-Yosef O., 1992, TRANSITIONS AGR PREH, P21

[2] Beadle G. W., 1977, Origins of Agriculture., P615

[3] STUDIES IN ARCHAEOLOGICAL MAIZE .1. THE WILD MAIZE FROM SAN-MARCOS CAVE REEXAMINED [J]. AMERICAN ANTIQUITY, 1990, 55 (03) : 500 - 511

[4] Blake Michael, 1992, TRANSITIONS AGR PREH, P133

[5] Byers D.S., 1967, PREHISTORY TEHUACAN, V1

[6] EVIDENCE FOR EARLY MAIZE (ZEA-MAYS) FROM THE ICE-HOUSE BOTTOM SITE, TENNESSEE [J]. AMERICAN ANTIQUITY, 1987, 52 (02) : 352 - 354

[7] ACCELERATOR RADIOCARBON DATING OF EVIDENCE FOR PREHISTORIC HORTICULTURE IN ILLINOIS [J]. NATURE, 1984, 308 (5958) : 443 - 446

[8] CUTLER HC, 1967, PREHISTORY TEHUACAN, P212

[9] DELLEHAY TD, 1989, MONTE VERDE LATE PLE

[10] EARLY CULTURAL EVIDENCE FROM MONTE-VERDE IN CHILE [J]. NATURE, 1988, 332 (6160) : 150 - 152