A STUDY OF THE SEPARATION POSSIBILITIES OF CATIONS USING GLASS MEMBRANESSTEYN WM; DE WET WJ.1972; SEPAR. SCI.; U.S.A.; DA. 1972; VOL. 7; NO 5; PP. 457-464; BIBL. 15 REF.Serial Issue

ELECTRODES SELECTIVES DE CERTAINS IONSVAN REENEN TJ; DE WET WJ.1971; T. NAT.-WETENSK.; S. AFR.; DA. 1971; VOL. 11; NO 3; PP. 171-179; ABS. ANGL.; BIBL. 47 REF.Serial Issue

POTENTIALS OF GLASS MEMBRANES IN MOLTEN BINARY NITRATESVAN REENEN TJ; DE WET WJ.1973; J. PHYS. CHEM.; U.S.A.; DA. 1973; VOL. 77; NO 13; PP. 1676-1678; BIBL. 9 REF.Serial Issue

DIRECT DETERMINATION OF THE NOBLE METALS BY ACTIVATION ANALYSIS UTILIZING HIGH-RESOLUTION GAMMA SPECTROMETRY.DE WET WJ; TURKSTRA J; TOERIEN FVS et al.1971; ACT.ANAL. GEOCHEM. COSMOCHEM., ED. BRUNFELT. A., STEINES. E., UNIVERSITETSFORLAGET, OSLO.; 1971, P. 371 A 379Miscellaneous

NONDESTRUCTIVE DETERMINATION OF PLATINUM METALS IN ORES, MATTE, AND LEAD ASSAY BEADS BY REACTOR ACTIVATION ANALYSIS AND HIGH RESOLUTION GAMMA SPECTROMETRY.TURKSTRA J; PRETORIUS PJ; DE WET WJ et al.1970; ANAL. CHEM.; USA; 1970(7), VOL. 42, NUM. 0008, P. 835 A 841Miscellaneous

NONDESTRUCTIVE NEUTRON ACTIVATION ANALYSIS OF SMALL SAMPLES OF WITWATERSRAND ORE FOR GOLD.DE LANGE PW; DE WET WJ; TURKSTRA J et al.1968; ANAL. CHEM.; USA; 1968(3), VOL. 40, NUM. 0002, P. 451 A 454Miscellaneous