Title: Valor Posicional/ Place Value (Yellow Umbrella Books. Mathematics. Spanish.)
Subjects: Number concept, Juvenile literature, Spanish language materials, Números, Literatura juvenil, Juvenile fiction, Fiction, Time travel, Running races, Cousins, Race discrimination, History, Track and field, Racism, African Americans, Sports illustrated, Olympic Games (11th : 1936 : Berlin, Germany), Olympic Games. fast (OCoLC)fst01408249, Children's fiction, Olympics, fiction, Sports, fiction, Time travel, fiction, Track and field, fiction, Germany, history, fiction