GUSTAFSON, A F
HANDBOOK OF FERTILIZERS : THEIR SOURCES,MAKE-UP EFFECTS, AND USE - 3 - JODHPUR, AGRIBIOS 2000 - pages 172
NITROGENOUS FERTILIZER MATERIALS
REQUIRMENTS FOR PLANT GROWTH
631.8 GUS/HA
HANDBOOK OF FERTILIZERS : THEIR SOURCES,MAKE-UP EFFECTS, AND USE - 3 - JODHPUR, AGRIBIOS 2000 - pages 172
NITROGENOUS FERTILIZER MATERIALS
REQUIRMENTS FOR PLANT GROWTH
631.8 GUS/HA