na YOGYA-02090000022920 20090227023725.0 ind 010-020900000022920 371.9 371.9 Mer S MERCER, Cecil D Students with learning disabilities Cecil D. Mercer Cet. 2 Columbus Charles E. Merrill Publishing 1983 x, 468 hlm 26 cm Pendidikan khusus YOPDYOG(B) 02-02-2007 3 06A0020681 06A0020682 06A0020683