00718nam a2200241 a 4500 65916 BD-RjUL 20211209081500.0 170313s1955 enka 001 0 eng (BD-RjUL)66046 DLC FO BD-RjUL eng eng 608 23 CRD 1955 Crowther, J. G. (James Gerald), 1899- 194923 Discoveries and inventions of the 20th century / J. G. Crowther 4th ed., entirely rev. and rewritten. London : Routledge & Paul, 1955. xvii, 432 p. : ill. ; 23 cm. Includes index Inventions. 194924 ddc BK 65916 65916 0 0 ddc 0 1 NFIC RUCL RUCL Reading 1955-09-12 B.H. Black well england 105.00 0 608 CRD 1955 2017-03-13 00:00:00 C-1 2017-03-13 BK