Nelkon, Michael.
Light and sound / M. Nelkon - London, Heinemann 1965 - vii, 342 p. : illus. ; 22 cm.
Includes index
50054632
GB50-3252
Light.
Sound.
QC355 / .N45
535 / NEL
Light and sound / M. Nelkon - London, Heinemann 1965 - vii, 342 p. : illus. ; 22 cm.
Includes index
50054632
GB50-3252
Light.
Sound.
QC355 / .N45
535 / NEL