Keeping well /

• 作者：by Bertha Morris Parker and M. Elizabeth Downing ; illustrations by Juanita Bennett and Polly Bollian ; cover by Lampler
• 出版者：Row, Peterson
• 出版地：Evanston, Ill :
• 語文：英語
• 叢書名：The Basic science education series
• 作者：ParkerBertha Morris;Downing M. Elizabeth
• 索書號：613 ; 613