|
1
|
|
|
|
Q180.55
.M4
L43
|
Practical research : planning and design/Paul D. Leedy
|
New York, [ United States ] : Macmillan Publishing Co. Inc. , 1980
|
Leedy, Paul D.
|
|
13823
|
|
2
|
|
|
|
Q180.55
.M4
L4
|
Practical research : Planning and design/Paul D. Leedy, Jeanne Ellis Ormrod
|
Essex, [ United Kingdom ] : Peason Education Limited , 2014
|
Leedy, Paul D.
|
9781292021171
|
108513
|