Litwin, Mark S.
How to measure survey reliability and validity Mark S.Litwin - New Delhi: Sage Publication, 1995. - 87p.
eng
0803973888
Health surveys
300.723 / LIH
How to measure survey reliability and validity Mark S.Litwin - New Delhi: Sage Publication, 1995. - 87p.
eng
0803973888
Health surveys
300.723 / LIH