TY - `BOOK` AU - Langley, Batty TI - The builder's director or bench mate PB - Blom CY - New York PY - 1970 LA - eng SE - xxiv, 184 p. of illus. 17 cm N1 - Reprint of the 1751 ed CN - 73 A 1816 AN - UBHD-1071569 ER -