How Do You Know What Time It Is?, , Albert Whitman & Company, Robert E. Wells,Early years: time and seasons,Early years / early learning concepts, wells of knowledge;robert e wells;science for kids;telling time;clocks;elementary school;scientist;calendar;teaching;education;inventor;preschool;young reader;first grade;world history;real life;inventions;sundial;water clock;time zones;measurement,, Wells of Knowledge Science Series, United States, en-UShttps://www.albertwhitman.comwells of knowledge;robert e wells;science for kids;telling time;clocks;elementary school;scientist;calendar;teaching;education;inventor;preschool;young reader;first grade;world history;real life;inventions;sundial;water clock;time zones;measurement, [BLURB],[CITY],,books, ebooks, biblet, Book2look