The kids' invention book

Profiles eleven inventors between the ages of eight and fourteen, describes the steps involved in inventing a new product, and discusses contests, patents, lawyers, and clubs.

המשפט הראשון: Do you know what's unusual about earmuffs?

שנה

1997

שפה

English

הוצאה

Scholastic Inc

מהדורות

1

עמודים

64

ISBN

9780439271097

מקור הנתונים: Wikidata