TY  - BOOK
AU  - DIXTER (Joseph S)
TI  - Elementary practical exercises on sound, light and heat
U1  - 534/33 
PY  - 1921///
CY  - London
PB  - Longman Green & Co Ltd.
KW  - sound
KW  - practical
KW  - on
KW  - light
KW  - heat
KW  - exercises
KW  - Elementary
ER  -