TY  - BOOK
AU  - Cochrane,Jennifer,ed
TI  - The invisible world
T2  - MacDonald junior reference library ; 50
SN  - 0356030261
U1  - 579/C663i 
PY  - 1972///
CY  - London
PB  - MacDonald Educational
KW  - Microorganisms
N1  - Index at the end
ER  -