הסוד של סבא אפרים
Series: Yalde bet ha-ʻets -- 5
Publisher: Kineret
Published: 2021
Place of publication: Modiʻin
Language: heb
Number of pages: 74
Subjects: Friendship; Juvenile fiction; Schools; Family secrets; Tree houses
Other titles: ha-Sod shel saba Efrayim; Grandpa's secret