VARIATIONS IN THE CLAY MINERALOGY OF RIVER SAMPLES = VARIATIONS DANS LA MINERALOGIE DES ARGILES DANS DES ECHANTILLONS PRELEVES DANS DES RIVIERESBIRCH GF.1981; ANN. GEOL. SURV., PRETORIA; ISSN 0373-6954; ZAF; DA. 1981; VOL. 15; NO 1; PP. 25-32; BIBL. 5 REF.; 60 ANAL.; 10 TAB. ; TABL./ESQUISSE GEOL./ILL./ANAL.Article

PHOSPHATIC ROCKS ON THE WESTERN MARGIN OF SOUTH AFRICABIRCH GF.1979; J. SEDIMENT. PETROL.; USA; DA. 1979; VOL. 49; NO 1; PP. 93-110; BIBL. 2 P.; 8 ILL.Article

SURFICIAL SEDIMENTS OF SALDANHA BAY AND LANGEBAAN LAGOON.BIRCH GF.1976; TRANS. GEOL. SOC. S. AFR.; S. AFR.; DA. 1976; VOL. 79; NO 3; PP. 293-300; BIBL. 24 REF.; 9 ILL.Article

NEARSHORE QUATERNARY SEDIMENTATION OFF THE SOUTH COAST OF SOUTH AFRICA (CAPE TOWN TO PORT ELIZABETH) = SEDIMENTATION LITTORALE QUATERNAIRE AU LARGE DE LA COTE SUD DE L'AFRIQUE DU SUD (DE CAPE TOWN A PORT ELIZABETH)BIRCH GF.1980; BULL.-REPUB. S.-AFR., GEOL. OPNAME; ISSN 0370-3371; ZAF; DA. 1980; NO 67; 20 P.; H.T. 3; ABS. AFR; BIBL. 1 P.; 1 TAB. ; CART. ISOPAQUE; ECH. 1:500 000; ESQUISSE/ILL./TABL.Serial Issue

PHOSPHORITE PELLETS AND ROCK FROM THE WESTERN CONTINENTAL MARGIN AND ADJACENT COASTAL TERRACE OF SOUTH AFRICABIRCH GF.1979; MAR. GEOL.; NLD; DA. 1979; VOL. 3; NO 1-2; PP. 91-116; BIBL. 3 P.; 6 ILL.Article

SURFICIAL SEDIMENTS ON THE CONTINENTAL MARGIN OFF THE WEST COAST OF SOUTH AFRICA.BIRCH GF.1977; MAR. GEOL.; NETHERL.; DA. 1977; VOL. 23; NO 4; PP. 305-337; BIBL. 2 P. 1/2; 21 ILL.Article

THE DISTRIBUTION OF CLAY MINERALS ON THE CONTINENTAL MARGIN OFF THE WEST COAST OF SOUTH AFRICABIRCH GF.1978; TRANS. GEOL. SOC. S. AFR.; ZAF; DA. 1978; VOL. 81; NO 1; PP. 23-34; BIBL. 2 P.; 8 ILL.Article

SEDIMENTOLOGICAL AND GEOPHYSICAL INVESTIGATIONS OF A MAJOR SEDIMENT EXIT POINT ON THE SOUTH-EAST AFRICAN CONTINENTAL MARGIN (VICINITY OF PORT ST JOHNS) = ETUDES SEDIMENTOLOGIQUES ET GEOPHYSIQUES D'UN POINT DE SORTIE DES SEDIMENTS IMPORTANTS SUR LA MARGE CONTINENTALE SUD-EST AFRICAINE (VOISINAGE DE PORT ST JOHNS)BIRCH GF.1982; TRANSACTIONS OF THE GEOLOGICAL SOCIETY OF SOUTH AFRICA; ISSN 0371-7208; ZAF; DA. 1982; VOL. 85; NO 2; PP. 91-103; BIBL. 17 REF.Article

BATHYMETRY AND GEOMORPHOLOGY OF THE CAPE SEAL TO CAPE RECIFE INNER SHELF = BATHYMETRIE ET GEOMORPHOLOGIE DE LA PLATEFORME CONTINENTALE INTERNE DU CAP SEAL AU CAP RECIFEBIRCH GF.1981; TRANSACTIONS OF THE GEOLOGICAL SOCIETY OF SOUTH AFRICA; ISSN 0371-7208; ZAF; DA. 1981; VOL. 84; NO 3; PP. 233-237; BIBL. 5 REF.Article

PHOSPHATE IN SEDIMENTS OFF SOUTH-WESTERN AFRICASUMMERHAYES CP; BIRCH GF; ROGERS J et al.1973; NATURE; G.B. ; 1973, VOL. 243, NUM. 5409, P. 509 A 511Serial Issue