TY  - BOOK
AU  - Potkov,L.A.[from old catalog]
TI  - A world we do not see
U1  - 579 23
PY  - 1957///
CY  - Moscow
PB  - Foreign Languages Pub. House
KW  - Microorganisms
KW  - Microbiology
N1  - Includes Index
ER  -