Shamayim ṿa-arets
Subtitle: beʾur le-torat ha-yaḥasut shel Alberṭ Ainshṭein
By: Ḥayim Ḳalman Iṭunin
Publisher: [s.n.]
Published: 1927
Place of publication: Buenos Aires
Language: heb
Number of pages: 34
Subjects: Relativity (Physics); Popular works
Other titles: Cielo y tierra.
Notes: Cover title.

Added t.p. and introduction in Spanish.