00724cam a2200193 a 4500 0030628636 9780030628634 DLC 630 IIR 1999 C111 Or. Environmentally sound agriculture : selected papers from the Fourth International Conference of the International Federation of Organic Agriculture Movements, Cambridge, Massachusetts, August 18 to 20, 1982 / xii, 426 pages : illustrations ; 25 cm Agricultural conservation Agricultural ecology Agriculture Organic farming Lockeretz, William International Federation of Organic Agriculture Movements. AEDBB 20889 20889 0 0 0 630_000000000000000_IIR_1999_C111_OR 0 92505 LBC LBC C111 2023-01-10 630 IIR 1999 C111 Or. a33693 2023-01-10 2023-01-10 AEDBB