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
0030628636 9780030628634
Agricultural conservation
Agricultural ecology
Agriculture
Organic farming
630 IIR 1999 C111 Or.
0030628636 9780030628634
Agricultural conservation
Agricultural ecology
Agriculture
Organic farming
630 IIR 1999 C111 Or.