TY  - BOOK
AU  - J. C Crowther
TI  - Discoveries and Inventions of the 20th Century
U1  - 509 
PY  - 1966///
CY  - London
PB  - Routledge and Kegan Paul
N1  - J. C Crowther: Discoveries and Inventions of the 20th Century.  London.  Routledge and Kegan Paul, 1966.--(509CRO)
ER  -