TY  - BOOK
ED  - Symposium on the Use of Isotopes and Radiation in Soil Organic-Matter Studies :
TI  - Isotopes and radiation in soil organic-matter studies: proceedings
U1  - 631.43 21st ed.
PY  - 1968///
CY  - Vienna
PB  - International Atomic Energy Agency
KW  - Soil physics
KW  - Soil science
ER  -