REPORT OF DOCTOR LUIS CASTELAZO AYALA, PRESIDENT OF THE ASOCIACI'ON MEXICANA DE GINECOLOG'IA Y OBSTETRICIA DURING 1961-1963
INFORME DEL DOCTOR LUIS CASTELAZO AYALA, PRESIDENTE DE LA ASOCIACI'ON MEXICANA DE GINECOLOG'IA Y OBSTETRICIA DURANTE EL PERIODO 1961-1963