TY  - BOOK
AU  - Baum, E. L.
TI  - Methodological procedures in the economic analysis of fertiliser use data
U1  - 631.88 
PY  - 1956///
CY  - Ames, Iowa
PB  - Iowa State College Press
KW  - Fertilizers and manures
KW  - Research
N1  - Includes bibliographical references
ER  -