00539 a2200193 4500 111691 9781897457795 por PL 510 YOU Young, William. . ed. 232 p Science - Study and teaching. 00001e/00001e94.jpg BR-BrIDEA BR-BrIDEA Complete science smart 7 fun with experiments, cool science facts and trivia questions. William Young [S.l.] Popular Book Company 2015 BK 111691 111691