TY  - BOOK
AU  - Sirohi, R. S.
TI  - A course of experiments with He-Ne-laser
SN  - 8122403115
U1  - 621.3663 
PY  - 1989///
CY  - New delhi
PB  - Wiley eastern lim.
N1  - "it includes the index p.109-110"
ER  -