TY  - BOOK
AU  - Lorents, F.
TI  - Kirnon ka rahasmya sansar
U1  - HI 535 L79K 
PY  - 1972///
CY  - New Delhi
PB  - Thomas Pr.
KW  - ULTRA - VIOLET RAYS
KW  - INFRA - RED RAYS
KW  - LASERS
KW  - X - RAYS
ER  -