FACTEURS INFLUANT SUR LA PRECISION DE LA MESURE DE LA MICRODURETE DES MINERAUX.STAWIN J.1971; PRZEGL. GEOL.; POL; 1971, VOL. 19, NUM. 0002, P. 80 A 83Miscellaneous

APPLICATION OF QUANTITATIVE SCALE OF MINERAL HARDNESS ELABORATED BY M. M. KHRUSHTSHEV IN RESEARCH PRACTICE ON MINERAL RAW MATERIALS.STAWIN J.1969; PRZEGL. GEOL.; POL; 1969(3), NUM. 0003, P. 125 A 127Miscellaneous

QUALITES TECHNOLOGIQUES DES SILEX POLONAIS.STAWIN J.1970; INST. GEOL., BIUL.; POL; 1970, VOL. 6, NUM. 0244, P. 105 A 155Miscellaneous

EXAMINATION OF HARDNESS OF IMPORTED FLINTS BY MEANS OF MICROHARDNESS TESTER PMT-3 AND HANEMANN TESTER.CHUDZINSKI J; STAWIN J.1968; PRZEGL. GEOL.; POL; 1968(1), VOL. 16, NUM. 0178, P. 31 A 35Miscellaneous