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Shifting to the new economy : call centers and beyond
DeLottinville, Paul, (1994)
Some dimensions of the drop-out problem in apprenticeship training
Johnson, Ronald W., (1967)
A second look at the drop-out problem in apprenticeship training
Johnson, Ronald W., (1968)
Caracteristiques et performance des hotels et des hotels-motels.
Levesque, G., (2000)