Dwiggins, Don. Voices in the sky; : the story of communications satellites. [electronic resource] / Illustrated with photos. and diagrs.. — San Carlos, Calif., : Golden Gate Junior Books, [1969]. — 80 p. : illus., maps. 28 cm.



Анотація:
Discusses the development of communications satellites, a technological feat which has "shrunk" the world.

LCCN: 69015400

Subjects--Topical Terms:
Artificial satellites in telecommunication.
Artificial satellites in telecommunication.

LC Class. No.: HE9719 / .D94

Dewey Class. No.: 621.388/5