Engineering drawing and geometry, eng /

av Hoelscher, Randolph P.
Publicerad 1959

Engineering Drawing and Geometry

av Hoelscher, Randolph P
Publicerad 1961

Graphic Aids in Engineering Computation

av Hoelscher, Randolph , P, M.S., C.E. and Arnold, Norman, Joseph, E.E., M.S.E.E and Pierce, Stanley, H.
Publicerad 1952