00672nam a2200253 a 4500 AR-ReUNN 20260702155854.0 260701s1969 us |||||||||||||||||eng eng Alyea, Hubert N. 204626 Dutton, Frederic B. 204627 Tested demonstrations in chemistry Pennsylvania Journal of Chemical Education 1969 231 páginas 1a ed. - 3a imp. Quimica 6152 Organica 28697 Coloide 185602 Miscelaneo 204628 Elementos 18889 LIB (EXA)18435 271019 0 0 0 1 EXA EXA GEN 2004-10-27 0 541 A316 ej.1 10.10-004018 LIB 271019 271019 AR-ReUNN spa AR-ReUNN aacr2 0 0 0 1 EXA EXA GEN 2004-10-27 0 541 A316 ej.1 10.10-004018 LIB