# gb191 Salyut-4 flight researches book

1979 published by the USSR Academy of Science book `Investigations of the atmospheric optical phenomena aboard the scientific station Salyut-4`.Books describes results of visual, photographic and photometric investigations of the aurora, noctilucent clouds, luminiscent particles and the meteor danger carried out aboard the orbital stations Salyut-4 and Salyut-6.This book based on researches of scientist-cosmonaut Georgy Grechko during his first two flights.Included photo copies from his board journal.Book signed and notared by him.