Roller, S., Lawson, M., Boddeker, W., & Council of Europe. Committee for General and Technical Education. (1975). The teaching of new mathematics in the primary schools of eight countries of Europe: Consolidated report. [Strasbourg] : [New York: Council of Europe, Committee for General and Technical Education.
Παραπομπή Chicago StyleRoller, Samuel., Muriel Lawson, W. Boddeker, and Council of Europe. Committee for General and Technical Education. The Teaching of New Mathematics in the Primary Schools of Eight Countries of Europe: Consolidated Report. [Strasbourg] : [New York: Council of Europe, Committee for General and Technical Education, 1975.
Παραπομπή MLARoller, Samuel., Muriel Lawson, W. Boddeker, and Council of Europe. Committee for General and Technical Education. The Teaching of New Mathematics in the Primary Schools of Eight Countries of Europe: Consolidated Report. [Strasbourg] : [New York: Council of Europe, Committee for General and Technical Education, 1975.