00621nam a22001817a 4500 BD-DhUL 20160530161853.0 160530s1923 n a|||| |||| 001 0 eng BD-DhUL BD-DhUL 331.13 KIE King, Willford Isbell Employment hours and earnings in prosperity and depression : United States, 1920-1922 / Willford Isbell King, New York : The National bureau of economic research, c 1923. 147 p. : ill. ; 25 cm. Includes index. Labor and laboring classes United States. ddc BK 72835 72835 0 0 ddc 0 331_130000000000000_KIE 0 NFIC 123611 DUL DUL GEN 2016-05-30 Purchased 331.13 KIE 17567 2016-05-30 2016-05-30 BK