=LDR  00000nam a2200000 i 4500
=245  \$aCombining Methods in Educational and Social Research
=250  \$a
=260  \$aUnited Kingdom : \$bOpen University Press, \$c2004
=300  \$a207 Halaman
=490  \$a
=020  \$a0335 21307 3
=082  \$a370