TY  - BOOK
AU  - Welford,W.T.
TI  - Optics / 
SN  - 0198518471 (pbk.)
U1  - 535 WEL 
PY  - 1981///
CY  - Oxford : 
PB  - Oxford University Press, 
KW  - Optics
N1  -  Includes index;  Bibliography: p. [143]
ER  -