TY  - BOOK
AU  - Small,James
TI  - Modern aspects of pH: with special reference to plants and soils 
U1  - 581.19 
PY  - 1954///
CY  - New York
PB  - Van Nostrand
KW  - Botanical chemistry
KW  - Soils
KW  - Analysis
KW  - Hydrogen-ion concentration
N1  - Includes bibliography and index
ER  -