TY  - BOOK
AU  - Marchand, Erich W.
TI  - GRADIENT INDEX OPTICS
U1  - 681.42 
PY  - 1978///
CY  - New York
PB  - Academic Press
KW  - Lenses -- Design And Construction
KW  - Optics, Geomatrical
N1  - Includes Index
ER  -