TY  - BOOK
AU  - Ibach,D.B.
TI  - A graphic method of interpreting response to fertilizer
T2  - Agriculture handbook / United States Department of Agriculture
AV  - S639 .I2
PY  - 1956///
CY  - Washington, D.C.
PB  - U.S. Dept. of Agriculture, Agricultural Research Service
KW  - Fertilizers
KW  - Graphic methods
N1  - "Supersedes U.S. Bur. Agr. Econ., FM 105, Determining profitable use of fertilizers, 1953 / by D. B. Ibach and S. W. Mendum."; Includes bibliographical references
ER  -