000 00291nam a2200121Ia 4500
008 220201s1978 xx 000 0 eng d
082 _bUMA
100 _aUmapathy, K.S.
245 0 _aInformation Sources
260 _aNew delhi
_bVikas Publishing house
_c1978
300 _a154
942 _2ddc
999 _c22317
_d22317