Author: KRAEFF, A.,
Title: Sumbangan untik pengetahuan efusiva dan intrusiva muda dari daerah-aaliran Sungal Kajan (Kalimantan Timur-Laut); A contribution to the petrology of the young extrusive and intrusive rocks of the river-basin of S. Kajan (N.E. Borneo). [Original
Description: edition]. Bandung, Kementerian Perekonomian Djawatan Geologi, 1955. Original printed wrappers, stapled. 18pp., bi-lingual text indonesian-english. 6 captioned black/white photo illustrations of rock-samples on 2 plates at very end, full-page map of Borneo, folded Area map, table in text, list of Rock-samples, including scientific nomenclature, A-4 sized cyclostyled presentation letter with acknowledgement of publication receipt loosely inserted. [Djawatan Geologi..Publikasi Keilmuan Seri Petrologi, Nr. 29]. Bi-lingual, indonesian/english contribution to the petrology of rocks, N.E. Kalimantant, Indonesian territory of Borneo. Very good copy.

Keywords: borneo kalimantan petrology science geology research rocks kajan riverbasin indonesia southeast asia mining petroleum