Beograd, Yugoslavia: NOLIT, 1978. Quarto. Item #027152
437 Pages, illustrated. Here for the first time is printing of Tesla's manuscript which were written in English. It indicated his ideas at a vital period of his research. Tesla's polyphase system was a major advance in transmitting power over a great distance. Parts of this diary were used in drawing up his patent applications between 1899 and 1902, and appear nowhere else. Bound in a brown leather-like cloth lettered in gilt, spine lettered and ruled in gilt. A fine copy.