00703nam a2200241 a 4500 AR-ReUNN 20260702143448.0 260701s1978 us |||||||||||||||||eng 0470-26427-6 eng Oelhaf, Robert C. 65870 Organic agriculture : economic and ecological comparisons with conventional methods New York John Wiley & Sons 1978 271 páginas Agricultura Organica 6372 Agricultura Alternativa 62226 Fertilidad del Suelo 8683 Aspectos Economicos 22042 Ecología 4910 LIB (CIB)184912 136248 0 0 0 1 CIB CIB GEN 2016-11-25 0 631.95 O28 ej.1 16.25-001172 LIB 136248 136248 AR-ReUNN spa AR-ReUNN aacr2 0 0 0 1 CIB CIB GEN 2016-11-25 0 631.95 O28 ej.1 16.25-001172 LIB