TY  - BOOK
AU  - Leedy,Paul D.
TI  - Practical research: planning and design 
SN  - 0023692421
AV  - Q180.55 .M4  .L43 1989
PY  - 1989///
CY  - New York
PB  - Macmillan
KW  - Research
KW  - Methodology
ER  -