Social research methods.
FORCESE (Dennis P) and RICHER (Stephen).
Social research methods. - New Jersey. Prentice-Hall, Inc., 1973 - viii,280
0 13 818237 X
300.72 FORS
Social research methods. - New Jersey. Prentice-Hall, Inc., 1973 - viii,280
0 13 818237 X
300.72 FORS
