Nitrogen and phosphorus: food production waste, and environment
Porter, Keith S.
Nitrogen and phosphorus: food production waste, and environment - Michigan Ann Arbor Science Publishers 1975 - xi,372p. 24cm.
Agricultural wastes as feed
TD930.N57
Nitrogen and phosphorus: food production waste, and environment - Michigan Ann Arbor Science Publishers 1975 - xi,372p. 24cm.
Agricultural wastes as feed
TD930.N57