Wellhausen and Borlaug during an interview at Chapingo's field.
1950
Silver Gelatin
显示更多 [+] 显示较少 [-]Edwin J. Wellhausen
显示更多 [+] 显示较少 [-]CIMMYT
显示更多 [+] 显示较少 [-]Unknown
显示更多 [+] 显示较少 [-]Wellhausen and Borlaug during an interview at Chapingo's field.
显示更多 [+] 显示较少 [-]Norman E. Borlaug
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