na YOGYA-02090000057284 20090227034207.0 ind 979-420-013-1 010-020900000057284 420 420 Jok E DEP JOKO SUMITRO English for science and technology Joko Sumitro Cet.2 Yogyakarta Gadjah Mada University Press 1990 viii, 175 hlm ilus 21 cm Bahasa Inggris YOPDYOG 28 Juli 2005 1 1990-456h CB-D.11