TY - GEN AU - Gerretsen, Johan C. H. AU - Groningen, Jahannes De Groot [ed.] AU - Gerretsen, Johan C.H. [ed.] ED - International Congress Of Mathematicians TI - Mathematicians: proceedings.. U1 - 510.6 PY - 1967/// CY - Groningen PB - Noordhoff KW - Mathematics -- Congresses N1 - English, French, Or German ER -