00759cam a22002771 4500 10326227 BD-DhUL 20140920192846.0 740417s1964 xx 000 0 eng 64009812 GB64-3578 (OCoLC)860393 DLC OSW OCoLC Uk DLC BD-DhUL premarc TK7872.L3 H4 535.2 HEO Heavens, O. S. Optical masers. / O. S. Heavens. London : Methuen, C1964. viii, 103 p. : ill, ; 19 cm. Methuen's monographs on physical subjects Includes Index. Lasers. 7 cbc oclcrpl u ncip 19 y-gencatlg ddc BK 12048 12048 0 0 ddc 0 535_200000000000000_HEO 0 NFIC 21413 DUSL DUSL GEN 1966-05-09 Purchased 535.2 HEO A42823 2014-09-20 2014-09-20 BK