Federal mapping program and unemployment relief

Engineering Index Backfile | 1935

Unemployment relief spurs winter construction of highway bridges

Engineering Index Backfile | 1932

Public works and unemployment relief as permanent public functions

Engineering Index Backfile | 1939

How highway work in upper Michigan provides unemployment relief

Sharpensteen, J.T. | Engineering Index Backfile | 1933

METHOD FOR MAKING A PAPER STENCIL FOR OBTAINING RELIEF IMAGES ON CONCRETE PRODUCTS (OPTIONS) AND A METHOD FOR OBTAINING RELIEF IMAGES ON CONCRETE PRODUCTS

SOBOL PETR VLADIMIROVICH | Europäisches Patentamt | 2021