TY  - BOOK
AU  - "Avery, B.W. & Bascomg, C.L."
TI  - Soil Survey Laboratory Methods (Soil Survey technical Monograph 6)
U1  - 631.473   L4 
PY  - 0000///"Harpenden, U.K."
CY  - 1974
PB  - Rothamsted Expt. Station
ER  -