TY  - BOOK
AU  - Heavens,O.S.
TI  - Optical masers
T2  - Methuen's monographs on physical subjects
U1  - 621.366 23
PY  - 1964///
CY  - London, New York
PB  - Methuen ; John Wiley & Sons
KW  - Lasers.
KW  - Masers.
N1  - Includes  index
ER  -