TY  - GEN
AU  - Black, C A
TI  - Methods of soil analysis : part 1 physical and mineralogical properties, including statistics of measurement and sampling
T2  - 9
U1  - 631.  41 BLA 
CY  - U S A, American society of agronomy, Inc
KW  - Soil analysis-statistics/mineral identification-soils
ER  -