00373nam a2200121Ia 450000500170000000800410001708200120005810000240007024500740009426000360016830000090020465000380021320240821151605.0240821s9999||||xx |||||||||||||| ||und||  a307 MAS  aMassialas, Byron G. 0aCrucial issues in the teaching of social studies : A book of readings  aNew JerseybPrentice-Hallc1964  a278p  aSOCIAL SCIENCES-TEACHING/RESEARCH