Descrizione

Features: Cunard's bid for ocean supremacy; Editorials - Michelson - by submarine to the north pole - wages and prosperity - fighting the crooks - human engineering - television broadcasts; Riding with the signal in the cab - right-of-way signals are repeated within the engine cab; Quick-freezing solves food problems; Efficient medical department for brokers and employees at the stock exchange; Airplains land blind - guided by radio; A a splintered planet? - tiny elongated Eros may be a fragment of an older, larger asteroid; National Aircraft Show; The biblical deluge a fact - Archeological finds are stratified as though by a flood; Amateur astronomy in Pittsburgh - an observatory is built by and for amateurs; Television now on schedule - first broadcasts of television on a regular program; Science in search of oil - The last of three articles on salt, sulfur, and petroleum; A familiar truck becomes a locomotive - gasoline powered yard locomotive has commendable features; Professionnal methods in amateur archeology; American olives by the ton - large industry in California is over 150 years old; Preserved for 10,000 yeares to come - unique methods of preserving records of Tokyo earthquake; Mechanizing a giant foundry - Allis Chalmers. One inch opening at top of spine-fold. Half-inch tear to fore-edge of front cover. Quarter inch tear to fore-edge of back cover. Covers remain 50% attached to contents. Average wear. Unmarked. Book