TY - BOOK AU - Ashenfelter, Orley AU - Card, David TI - Handbook of Labor Economics SN - 0-444-50189-4 PY - 1999/// CY - Amsterdam PB - Elsevier Science B.V. KW - handbook UR - https://www.elsevier.com/books/handbook-of-labor-economics/ashenfelter/978-0-444-50189-9 ER -