| Reference | {Deposit:: DUMORT, J.C., 1968, NOTICE EXPLICATIVE SUR LA FEUILLE DOUALA-OUEST: DIR. MIN. GEOL. CAMEROUN, YAOUNDE, 69 P., 1 MAP 1/500,000.}{Deposit:: HIERONYMUS, BERNARD, 1971, PRELIMINARY NOTE ON THE WEATHERING OF TRACHYTE OF THE BAUXITIC ZONE OF FONGO-TONGO, MENOUA, CAMEROON, CAMEROUN, UNIV. FED., FAC. SCI., ANN., NO. 6, P. 39-52 (INCL. ENG. SUM.), ILLUS. (INCL. SKETCH MAP).} |