A RAPID RECONNAISSANCE OF THE MAIN CLAY MINERAL PROVINCES IN THE GUYANAS.BRINKMAN R.1967; GEOL. EN MIJNBOUW; NLD; 1967(12), VOL. 46, NUM. 0012, P. 446 A 452Miscellaneous

STATUS OF GEOLOGICAL RESEARCH IN THE CARIBBEAN.WEAVER JD.1967; STATUS GEOL. RES. CARIBB., P.R; PRI; 1967(12), NUM. 0013, P. 1 A 26Miscellaneous

OUTLINE OF THE PRECAMBRIAN GEOCHRONOLOGY OF SOUTH AMERICA.CORDANI UG; MELCHER GC; ALMEIDA FFM DE et al.1968; CANAD. J. EARTH SCI.; CAN; 1968(6), VOL. 5, NUM. 0003-002 , P. 629 A 632Miscellaneous

A RAPID RECONNAISSANCE OF THE MAIN CLAY MINERAL PROVINCES IN THE GUYANAS.BRINKMAN R.1967; GEOL. EN MIJNBOUW; NLD; 1967(12), VOL. 46, NUM. 0012, P. 446 A 452Miscellaneous

OUTLINE OF THE PRECAMBRIAN GEOCHRONOLOGY OF SOUTH AMERICA.CORDANI UG; MELCHER GC; ALMEIDA FFM DE et al.1968; CANAD. J. EARTH SCI.; CAN; 1968(6), VOL. 5, NUM. 0003-002 , P. 629 A 632Miscellaneous

DIE PROBLEMATIK PALAEOGEOGRAPHISCHER REKONSTRUKTION. (LE PROBLEME DE LA RECONSTITUTION PALEOGEOGRAPHIQUE).BEURLEN K.1969; GEOL. RDSCH.; DEU; 1969, VOL. 58, NUM. 0003, P. 713 A 734Miscellaneous