TY  - BOOK
AU  - Smith,W.J.
AU  - Turner, E. L.
AU  - Hallam, C. D.
TI  - Photo engraning in relief: a text book intended for the use of apprentices and others interested in the technique of photo engraning 
PY  - 1951///
CY  - London
PB  - Isaac Pitman
N1  - Include bibliography
ER  -