00512     2200193   4500001002100000005001500021035002000036007000300056008004100059020001800100082001100118084001700129100001700146245006500163250000600228260002900234300003000263650002500293INLIS00000000000270920210620095534  a0010-0621001044ta210620                d          1 ind    a979-683-851-6  a370.15  a370.15 AND l0 aAnderson Roy1 aLANGKAH PERTAMA Membuat Siswa Berkonsentrasi /cRoy Anderson  a1  aJakarta :bindeks,c2008  a137 hlm :bilus. ;c21 cm  apsikologi pendidikan