Publicado por American Printing House for the Blind, Louisville, KY, 1972
Librería: Xochi's Bookstore & Gallery, Truth or consequences, NM, Estados Unidos de America
Hardcover. Condición: Near Fine. No Jacket. 255pp.incl.index; HB green w/blk.; slight rub w/clean,tight pgs. " .provides students and transcribers with a well-drawn, logical system of braille notation which insures a faithful presentation of signs and usages employed in technical texts.".