000
00257nam a2200097Ia 4500
008
190428s9999||||xx |||||||||||||| ||und||
100
_a
Thyagarajan, K.
_9
12112
245
_a
Contemporary optics
250
_b
1981. x-370
260
_b
Macmillan India. Delhi, India
999
_c
12038
_d
12038