توضیحات
Ramps are simple machines used for work and play. Workers use them for easy loading and unloading. Skateboarders use them to do tricks. Readers will learn how ramps make work easier and how they are used in everyday life.
جزئیات کتاب
فرمت
جلد نرم
صفحات
24 صفحه
زبان
انگلیسی
منتشر شده
اوت 1, 2009
ناشر
Bellwether Media
نسخهها
2 نسخه
ISBN-10
1600143466
ISBN-13
9781600143465