TY  - BOOK
AU  - Valk W. L.
TI  - Production, pricing and unemployment in the static
T2  - Netherlands Economic Institute, Publication Series, 21
U1  - X:922, G7 D&W 
PY  - 1937///
CY  - London
PB  - P.S King & Sons Ltd      
KW  - Job Evaluation
ER  -