หนังสือที่แต่งโดย Leedy, Paul D 8 Results

No.TitlePublished
1Practical research : planning and design2005
2Practical research : planning and design1993
3How to read research and understand it1981
4Practical research : planning and design1980
5Practical research : planning and design1974
6A Key to better reading1968
7Read with speed and precision1963
8Improve your reading : a guide to greater speed, understanding and enjoyment1956