00378nam a22001577a 4500999001900000005001700019010001300036020001500049035001300064037001700077082001100094245004200105260002300147300002500170942002500195 c158132d15813220181017153939.0 aA-841076 a9231016660 aA-841076 bUnesco,Paris a370.78 aUnesco handbook for science teachers/ aUnesco,Parisc1980 a199 p.c22 c.m. (Hb) 2ddccENh370.78mUne