na INLIS000000000014954 20160918014137 160923||||||||| | ||| |||| ||ind|| 9797565473 0010-091600000014954 ind 001.42 001.42 MUS m Mustafa EQ, Zainal Mengurai variabel hingga instrumentasi Yogyakarta Graha Ilmu 2013 xv, 244 hal. : ilus. ; 23 cm. Pb'2014 RESEARCH--METHODOLOGY