TY  - BOOK
AU  - GRAFF, Otto
TI  - Progress in soil biology beitrage zur bodenbiologie travaux recents de la biologie du sol : proceedings
U1  - 631.46 G61P 
PY  - 1967///
PB  - Amsterdam
KW  - SOIL - BIOCHEMISTRY
KW  - SOIL BIOLOGY
KW  - SOIL MICRO - ORGANISMS
ER  -