TY  - BOOK
AU  - Potkov,Lev
AU  - Perelman,W.
AU  - Danko,X.
TI  - A world we do not see
U1  - 576 
PY  - 1957///
CY  - Moscow
PB  - Foreign Languages Pub.
KW  - Microorganisms
KW  - Microbiology
N1  - Text in English and Russian
ER  -