Gaya APA

W.rohland, . (1957). Investigation Into The Geological mining aspects of the iron-are and coal deposits in indonesian.main report part 1 "wedexro" main report part 1 . dusserdolf: westdeutsches ingenieur--buro.

Gaya MLA

W.rohland, . "Investigation Into The Geological mining aspects of the iron-are and coal deposits in indonesian.main report part 1 "wedexro" main report part 1". dusserdolf: westdeutsches ingenieur--buro, 1957. Batubara.