Practical research planning and design/
Leedy, Paul D
Practical research planning and design/ Paul D. Leedy - Sixth edition. - New Jersey: Prentice- Hall; 1997. - xvi, 304 pages.: illustrations, 28 cm.
9780132414074
--Research- methodology
001.4 LEED
Practical research planning and design/ Paul D. Leedy - Sixth edition. - New Jersey: Prentice- Hall; 1997. - xvi, 304 pages.: illustrations, 28 cm.
9780132414074
--Research- methodology
001.4 LEED