000 00309 a2200133 4500
080 _a007
_bS 525 R
245 1 _aResearch design
_cby V.P. Shah
250 _a2nd rev. ed.
260 _aAhmedabad
_bRachana Prakashan
_c1977
650 _aResearch
100 1 _aShah, V.P.
_d
300 _a24 p.
901 _a132191
999 _c57863
_d57863