TY  - BOOK
AU  - Mitchell, R. L.
TI  - The spectrographic analysis of soil, plants and related materials
T2  - Technical communication
U1  - 544.6 
PY  - 1948///
CY  - Harpenden
PB  - Commenwealth Bureaus of Soil Science
KW  - Espectroquímica
KW  - Suelos
KW  - Análisis
ER  -