The importance of biological agriculture in a world of diminishing resources: proceedings
IFOAM. International Scientific Conference (5th: 1986: University of Kassel, Germany)
The importance of biological agriculture in a world of diminishing resources: proceedings (Book) - Witzenhausen Verlagsgruppe Weiland 1986 - 448p. 20 cm.
392605901X
Organic farming--Congresses
631.8 INT / 7952
The importance of biological agriculture in a world of diminishing resources: proceedings (Book) - Witzenhausen Verlagsgruppe Weiland 1986 - 448p. 20 cm.
392605901X
Organic farming--Congresses
631.8 INT / 7952