20 latviešu grāmatzīmes
By: [Ievada autors P. Upītis]
Publisher: Latvijas valsts izd-ba
Published: 1963
Place of publication: Riga
Language: lav
Other titles: 20 latyshskikh knizhnykh znakov.
Notes: Russian title from colophon: 20 [i.e. Dvadtsatʹ] latyshskikh knizhnykh znakov.

Introduction in Latvian, Russian, English, French and German.