TY  - BOOK
AU  - Holder, Douglas William
AU  - North, R. J.
TI  - SCHLIEREN METHODS
U1  - 535.3 
PY  - 1963///
CY  - London
PB  - H. M.Stationery Off.
KW  - Schlieren photography--Equipment and supplies
KW  - Schlieren Apparatus
N1  - Includes Bibliography
ER  -