TY  - BOOK
AU  - KUSHWAHA,SUNIL
AU  - SINGH,N.M.
TI  - UGC-CSIR JRF/NET PHYSICAL SCIENCES
SN  - 978-8189-30105-7
U1  - 150.194 4 
PY  - 2013///
CY  - 
PB  - Danika Publishing Company New Delhi 
ER  -