TY  - BOOK
AU  - Samuel L. Tisdale
AU  -  Werner L. Nelson, 
TI  - Soil fertility and fertilizers
U1  - 631.8 
PY  - 1961///
CY  - New York
PB  - Mac Millan Company
N1  - Samuel L. Tisdale & Werner L. Nelson: Soil fertility and fertilizers.  New York.  Mac Millan Company, 1961.--(631.8TIS)
ER  -