TY  - GEN
AU  - GUSTAFSON, A F
TI  - HANDBOOK OF FERTILIZERS : THEIR SOURCES,MAKE-UP EFFECTS, AND USE
U1  - 631.8 GUS/HA 
CY  - JODHPUR, AGRIBIOS
KW  - NITROGENOUS FERTILIZER MATERIALS
KW  - REQUIRMENTS FOR PLANT GROWTH
ER  -