TY  - BOOK
AU  - Mitchell, R.L.
TI  - Spectrographic analysis of soils, plant and related materials
U1  - 631.4 M67S 
PY  - 1948///
CY  - Harpenden, U.K.
PB  - Commomwealth Bureau of soil science
KW  - SOILS - ANALYSIS
ER  -