le[hus .&tlbign, Publishing & Printing Ge&mg F, Pusat Sistem Informasi (PSI) Kampus USU tl Universitas No. 9 Medan 20l55,Indonesia rsbn I

1 le[hus.tlbgn, Publshng Prntng Gemg F, Pusat Sstem Informas (PSI) Kampus USU tl Unverstas No. 9 Medan 20l55,Indonesa Telp ; Fax 06 I -82 t3737 USU Pr...
Author:  Yulia Yuwono

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