by Oemarjati, Boen S. & W. Wardhana $6.00
by Srivastava, A.C. $6.00
by Dr. Ir. Muhammad Rasyaf, MS $7.00
by M. Ghufron H. Kordi K $7.00
by Djokosetio Sidiarto, Lily dkk $7.00
by Parakkasi, Aminuddin $13.00
by Gunawan Widjaja, A. Yani $9.00