00000nam 2200000 4500 INLIS000000000000951 20220716120053.0 220716||||||||| | ||| |||| ||eng|| 0010-072200000000951 eng 631.0913 631.0913 RUT F Ruthenberg, Hans Farming systems in the tropics 2nd,ed. Oxford: Clarendon Press, 1976 xvi, 366 hlm. : ilus.; 24 cm. Farming-Tropics