00323nam a2200121Ia 4500008004100000020001800041040003800059100002200097245002900119250000800148260003000156300001500186211230s9999    xx            000 0 und d  a0 697 05150 1  cJayakar Knowledge Resource Centre  aAnderson, James R 0aGeography of agriculture  a1st  bWM C BrownaDubuquec1970  aix,106p p.