Organic material as fertilizers :
Organic material as fertilizers :
- Rome : Food and Agriculture Organization of the United Nations, 1975.
- vi, 394 p. : ill. ;
- Soils bulletin ; .
Cover title: Organic materials as fertilizer. On t.p.: Soil Resources, Development and Conservation Service; Land and Water Development Division.
Organic fertilizers
631.86 ORG
Cover title: Organic materials as fertilizer. On t.p.: Soil Resources, Development and Conservation Service; Land and Water Development Division.
Organic fertilizers
631.86 ORG