000 00316nam a2200133Ia 4500
008 160316s1980 xxu||||| |||| 00| 0 eng d
020 _a
100 _aHans Ruthnberg
245 _aFarming Systems In The Tropics
250 _a3
260 _aNEW YORK
_bOXFORD UNIVERSITY PRESS
_c1980
300 _a424
700 _a
_a
999 _c25538
_d25538