Joint survey on log transport in Siondop and Tabujung forest area, South Tapanuli, North Sumatra - Indonesia. Badan Penggerak Projek-Projek Kehutanan ([Bogor?], 1966)
"Projek no. 7."
"No. 5/VII b."
Keywords: Lumbering -- Indonesia -- Sumatera Utara; Lumber -- Transportation