00369nam a2200169Ia 4500008004100000041001200041082000800053082001100061100001500072100001100087245003200098260001300130260001200143260000900155300001500164650002000179150909s9999    xx            000 0 und d  aEnglish  a500  bGRO/BO  aGrolier     eAuthor  aBook of popular science V.4  aNew York  bGrolier  c1972  a454  Pages  aGeneral science