TY - BOOK AU - National Science Foundation TI - Conserving energy with nitrification inhibitors(energy in agriculture) T2 - US Department of commerce NTIS PV-277 199 U1 - PH 620.9:631.847.1:633.002(047.3) L7 PY - 1977/// CY - Washington DC PB - National science foundation KW - Energy conservation:nitrification inhibitors ER -