BOOKS - EQUIPMENT - Самодельный проекционный фонарь
US $8.59
215404
215404
Самодельный проекционный фонарь
Author: Албычев П.В.
Year: 1930
Number of pages: 33
Format: PDF
File size: 10.6 MB
Language: RU
Year: 1930
Number of pages: 33
Format: PDF
File size: 10.6 MB
Language: RU
It was somehow established that in the preface the author makes excuses to readers why he wrote his book. But there are questions and things that speak for themselves, there are truths that do not need proof. These include a projection or, as it is also called, a magic lantern; a thing absolutely necessary in every school, every club and every pioneer unit. But buying it is expensive, and making it yourself is not so difficult.