000
00280nam a2200121Ia 4500
008
221001s1969 xx 000 0 eng d
082
_a
160 GAU
100
_a
Gautam, J. K.
245
0
_a
Scientific method
260
_a
Delhi
_b
R. Chand
_c
1969
300
_a
iv, 227p.
942
_2
ddc
_c
BK
999
_c
556
_d
556