Po voprosu ob umstvennom utomlenīi trudi͡a︡shchikhsi͡a︡ li͡u︡deĭ voobshche, uchashchikhsi͡a︡ zhe di͡e︡teĭ, v chastnosti i o sposobakh ego izsli͡e︡dovanīi͡a︡
By: A.A. Krylov.
Publisher: Tip. G. Lissnera i A. Gesheli͡a︡
Published: 1898
Place of publication: Moskva
Language: rus
Number of pages: 39
Subjects: Mental fatigue.; Child mental health.
Notes: Includes bibliographical references.
Cover title.