00777cam a22002651 4500 8739330 BD-DhUL 20160816152120.0 761119s1928 enka b 000 0 eng c l 28000176 (OCoLC)2567816 Library, U.S. Dept. of Labor MiEM OCoLC OCoLC BD-DhUL premarc 331.21 VAP 331.21 VAP Valk, Willem Lodewijk, 1900- The principles of wages / by Dr. Willem L. Valk. London: P. S. King & Son, ltd., 1928. xii, 139 p. diagrs. 23 cm. Bibliography: p. 137-139. Wages. Economics. 7 cbc oclcrpl u ncip 19 y-gencatlg ddc BK 98794 98794 0 0 ddc 0 331_210000000000000_VAP 0 NFIC 164442 DUL DUL GEN 2016-08-16 331.21 VAP 28467 2016-08-16 2016-08-16 BK