000 00309nam a2200121Ia 4500
008 140113s9999 xx 000 0 und d
082 _a631.11(213) L1
100 _a"Hans, Ruthenberg."
245 _aFarming system in the Tropics
260 _a1971
_bCalender Press
_cOxford
300 _a313
942 _cBK
999 _c58499
_d58499