Text ( visual ) : unmediated
Proceedings of New York University twenty-first annual Conference on Labor / Thomas G.S. Christensen, editor. -- New York : M. Bender , c1969. -- xii, 606 p. ; 24 cm. -- Includes indexes. -- (BB09925807) ; https://ci.nii.ac.jp/ncid/BB09925807
Other Title(s): New York University, twenty-first annual Conference on Labor. -- Author Heading(s): Christensen, Thomas G. S. ; Conference on Labour ; New York University