TY  - BOOK
AU  - Weir,Wilbert Walter
TI  - Soil science, its principles and practice
AV  - S591 .W42 1949
U1  - 631.4 
PY  - 1949///]
CY  - Philadelphia
PB  - J.B. Lippincott Co.
KW  - Soils
KW  - Agriculture
N1  - "Suggested references for reading" at end of each chapter
ER  -