WOLFE, JOHN W.
Practical shop mathematics. Vol.1: Elementary. By John W. Wolfe & Everett R. Phelps. Rev. ed.
WOLFE, JOHN W. Practical shop mathematics. Vol.1: Elementary. By John W. Wolfe & Everett R. Phelps. Rev. ed. © 11Aug39; A131677. Mary Ann Lindsay (E of J. H. Wolfe), Richard D. Phelps & Charlotte Mann (C of E. R. Phelps); 25May67; R410746.
Mary Ann Lindsay|E of J. H. Wolfe||Richard D. Phelps & Charlotte Mann|C of E. R. Phelps