TY  - BOOK
AU  - Campbell,F.W.
AU  - Law,T.A.
AU  - Morris,L.F.
AU  - Sinclair,A.T.
TI  - Sound-film projection
U1  - 778.5544 
PY  - 1946///
CY  - London
PB  - George Newnes Limited, 
KW  - Specific fields of photography
KW  - Motion pictures
ER  -