Belove, Charles.

Schachter, Harry.

Schilling, Donald L.

Pakpahan, Sahat.

Edminister, Joesph A.

Sukrisno, Umar.

G. van der Wal

Peebles, Jr. Peyton Z.

Giuma, Tayeb A.

Ir. Yacobus Manafe, MS

Ir. Soemadi, MT

Drs. Aminuddin D., M.Si

Ir. Otto Benyamin Sirumapea

Ir. Kimar Turnip, MS

Ir. Wibowo P., PhD.

Ir. Doloksaribu, M.Ing

Ir. Mediana Uguy, M.Si

Setiawan, E.

Harten,

Rosenberg, Paul.

Del Toro, Vincent.

Kadir, Abdul.

Ramelan.

Soetrisno.