TY  - BOOK
AU  - Egan, Walter G
AU  - Hilgeman,Theodore W
TI  - Optical properties of inhomogeneous materials: applications to g eology,astronomy, chemistry and engineering 
U1  - 535 
PY  - 1979///
CY  - New York
PB  - Academic Press
KW  - Inhomogeneous materials
KW  - Optical properties
N1  - Includes bibliographical references ( p.221-226)
ER  -