Methods and issues in social research /
Black, James A.
Methods and issues in social research / James A. Black and Dean J. Champion. - New York : J. Wiley, c1976. - 445 p.
Ciencias sociales--Metodología
Methods and issues in social research / James A. Black and Dean J. Champion. - New York : J. Wiley, c1976. - 445 p.
Ciencias sociales--Metodología