TY  - BOOK
AU  - Welford,W.T.
TI  - Aberrations of optical systems
SN  - 9780852745649
U1  - 681.4 
PY  - 1989///, c1986
CY  - Bristol, Eng., Philadelphia
PB  - A. Hilger
KW  - Optical instruments
KW  - Aberration
KW  - Geometrical optics
N1  - "Amended reprint 1991" -- T.p. verso; Includes bibliographical references and indexes
UR  - http://www.loc.gov/catdir/enhancements/fy0661/89001675-d.html
ER  -