Pochemu tak byvaet?
By: Marta Gumilevskai͡a ; [khudozhnik Ė. Benʹi͡aminson]
Contributors: Benʹi͡aminson, Ė, illustrator
Publisher: Oniks-lit
Published: 2013
Place of publication: Moskva
Language: rus
Number of pages: 191
ISBN-13: 9785445101987
Copyright date: 2013
Subjects: Illustrated children's books; Specimens; Children's encyclopedias and dictionaries, Russian; Russian language materials
Description: Why is the grass green and the sea salty? Why is there day and night? Why is the sky blue and the snow white? Martha Gumilevsky book "Why it happens?" helps parents to properly  answer the most difficult questions for children.
Notes: "Samye trudnye detskie voprosy, kotorye stavi͡at vzroslykh v tupik. Pochemu trava zelënai͡a, a more solënoe? Pochemu byvaet denʹ i nochʹ? Pochemu nebo goluboe, a sneg belyĭ? Pravilʹnye otvety na voprosy, kotorye zadai͡ut deti." -- cover.

In Russian.