TY  - BOOK
AU  - Welford,W.T.
TI  - Optics
SN  - 0198518471 (pbk.) :
U1  - 535 19
PY  - 1981///
CY  - Oxford
PB  - Oxford University Press
KW  - Optics
N1  - Includes index; Bibliography: p. [143]
ER  -