Soil organic matter and its role in crop production

Manylion Llyfryddiaeth
Prif Awdur:	Allison, Franklin Elmer 1892-1972
Fformat:	Llyfr
Iaith:	English
Cyhoeddwyd:	Amsterdam Elsevier Scientific Pub. 1973.
Cyfres:	Developments in soil science 3
Pynciau:	Humus. Soil science. Organic farming.