TY  - BOOK
AU  - Singh, R K  .
AU  - Sanyal,S P  .
TI  - Phonons in condensed matter physics / 
SN  - 81-224-0086-8
U1  - 530.41 
PY  - 1990///
CY  - New Delhi : 
PB  - Wiley Eastern Ltd , 
N1  - 20321, CSS
ER  -