na INLIS000000000015814 20201210113201 0010-1220000039 ta 201210 0 [22] 649.1 649.1 SCH b Schaefer, Charles E. Bila anak bertanya / Charles E. Schaefer Ph.D Cet. 1 Jakarta : PT.BPK. Gunung Mulia, 1988 xii, 207 hlm. ; 20 cm Perpusdakotakediri 009192 (033037) /PU-KDR/HD/2014 009192 (033037) /PU-KDR/HD/2014