Trends in Nineteenth Century PetrologyNIEUWENKAMP W.Janus. 1975, Vol 62, Num 4, pp 235-269Article

OCEANIC AND CONTINENTAL BASALTS IN THE GEOCHEMICAL CYCLE.NIEUWENKAMP W.1968; GEOL. RDSCH.; DEU; 1968(2), VOL. 57, NUM. 0002, P. 362 A 372Miscellaneous

OCEANIC AND CONTINENTAL BASALTS IN THE GEOCHEMICAL CYCLE.NIEUWENKAMP W.1968; GEOL. RDSCH.; DEU; 1968(2), VOL. 57, NUM. 0002, P. 362 A 372Miscellaneous

W. O. J. N.: leven et werken, bouwen et zwerven van de kunstenaar W. O. J. NieuwenkampNIEUWENKAMP, W. O. J.1980, 160 p.Book

Structures in the Basic Belt of the Bushveld complex = Structures de la Basic Belt du Complexe du BushveldVAN BILJON, S; WEGMANN, E; NIEUWENKAMP, W et al.Transactions and Proceedings of the geological Society of South Africa. 1963, Vol 66, pp 11-48, 38 p., 7 plArticle