Peraturan beton bertulang indonesia;  

Surat Surat Perjanjian & Kontrak;  

Up- to Data CMOS 7400 IC's Data & Comparison Tables ;  

Microsoft Word 6 For Windows Step by Step;  

International Labour Office Management Development Branch/ Human Resources Department
'Human Resources Department';  

Petunjuk Praktikum Operasi Teknik Kimia;  

Microsoft MS-DOS User's Guide: Version 3.3;  

Petunjuk praktikum operasi teknik kimia;