Title: Diseases of the heart and circulation
First published: 1956
Description: Ms. Frizzle and her tour group are transported to China 1000 years in the past, where they learn how rice, tea and silk are grown and harvested, and visit the Emperor in the Forbidden City.
Subjects: Heart, Diseases, Blood circulation disorders, Circulation, Disorders of, Blood, Disorders of Circulation, Cardiovascular Diseases, Heart Diseases, Cerebrovascular Disorders, Blood Circulation, Classroom management, School discipline