TY  - BOOK
AU  - Tisdale, Samuel L.
TI  - Soil fertility and fertilizers
U1  - 631.45+631.8 J6.J6;1 
PY  - 1956///
CY  - New York
PB  - The Macmillan Company
KW  -  Samuel L.Tisdale and Werner L.Nelson.
KW  - Nelson, Werner L.,joint author
KW  - Soil fertility,Fertilizers and Manures
ER  -