TY  - BOOK
AU  - Sparks, D L
TI  - Methods of soil analysis Part 3. Chemical methods
T2  - Soil Science Society of America Book Series 5
U1  - 631.42 
PY  - 1996///
CY  - U S A
PB  - Soil Science Society of America, Inc and American Society of Agronomy, Inc
KW  - Soil sampling
ER  -