TY  - BOOK
AU  - Leedy,Paul D.
AU  - Ormrod,Jeanne Ellis
TI  - Practical research: planning and design 
SN  - 9780132693240
U1  - 001.4 
PY  - 2013///
CY  - Boston
PB  - Pearson
KW  - 	 Research.
KW  - Investigación científica
KW  -  Investigación científica
N1  - Includes bibliographical references and index
ER  -