TY  - BOOK
AU  - Walsh, J. W. T.
TI  - Textbook of illuminating engineering
PY  - 1954///
CY  - Sir  Isaac Pitman & Sons
PB  - London
UR  - http://14.139.222.13:80/cgi-bin/koha/opac-detail.pl?biblionumber=2135
ER  -