Roger Sapford
Survey research/ by Roger Sapford - 2nd - London: Sage, 2007. - 276p.
9781412912310
Survey Research
Research Statistical Method
001.433 / ROG/S
Survey research/ by Roger Sapford - 2nd - London: Sage, 2007. - 276p.
9781412912310
Survey Research
Research Statistical Method
001.433 / ROG/S