Research design explained/
Mitchel, Mark. 1996.
Research design explained/ Mark mitchel - 3nd ed. - Toronto.: Harcourt Brace college publishers - xxiii,624p. :ill. Includes index
0155028286
BF 76.5 .m58 1996
Research design explained/ Mark mitchel - 3nd ed. - Toronto.: Harcourt Brace college publishers - xxiii,624p. :ill. Includes index
0155028286
BF 76.5 .m58 1996