00310nam a2200109Ia 450000500170000000800410001708200180005810000190007624500510009526000440014630000100019020260205040334.0260111s9999||||xx |||||||||||||| ||und||  a910.07  B255P  aBarnard, H. C. 0aPrinciples and practice of geography teaching.  aLondonbUniversity Tutorial Pressc1949  a235P.