TY  - BOOK
AU  - Alexander, Martin.
TI  - Introduction to soil microbiology
U1  - 631.46 
PY  - 1977///
CY  - New York
PB  - Wiley
KW  - Suelos
KW  - Microbiología
N1  - Sustituye Allen. Experiments in soil bacteriology. c.1
ER  -