Libros de Stan Berenstain (2 libros)

Hermana Osa is upset by all the attention her new baby sister is receiving, but when she gets a special homework assignment, Hermana Osa starts to change her tune. Original.

When Sister Bear notices that Mama Bear's stomach is getting larger and larger, she begins to ask a lot of questions, thus Mama and Papa, with the help of Dr. Gert, provide her the answers she needs by explaining the process of pregnancy in an easy-to-understand manner. Original.