Leedy, Paul D.
Practical research : planning and design / [by] Paul D. Leedy. - 3rd ed. - New York : Macmillan, c1985. - xi, 313 p. : ill.
0023692200 (pbk.)
Research--Methodology.
Practical research : planning and design / [by] Paul D. Leedy. - 3rd ed. - New York : Macmillan, c1985. - xi, 313 p. : ill.
0023692200 (pbk.)
Research--Methodology.