000 00325nam a2200133Ia 4500
008 221001s1973 xx 000 0 eng d
082 _a160 KAU
100 _aKaul, B. N.
245 0 _aElements of scientific methods
250 _a2nd ed.
260 _aDelhi
_bSultan Chand
_c1973
300 _aviii, 122p.
942 _2ddc
_cBK
999 _c45726
_d45726