Flower, Floyd J
Improving survey questions : design and evaluations - New Delhi Sage Publications 1995 - 191 - Applied social reserach methods series .
0803945833
Social surveys
001.42 / FOW/IM
Improving survey questions : design and evaluations - New Delhi Sage Publications 1995 - 191 - Applied social reserach methods series .
0803945833
Social surveys
001.42 / FOW/IM