TY  - BOOK
AU  - Black, C. A.[et al.]
TI  - Methods of soils analysis
PY  - 1965///
CY  - Wisconsin
PB  - Amercan Society of Agronomy
KW  - Soil ManagementSoil FertilitySoil Sciences
N1  - Part 2 Chamical and Microbiological Properties
ER  -