TY  - BOOK
AU  - Wallen. N.E.
TI  - Educational research: a guide to the process
SN  - 9780805832808
AV  - DUCE LB1028.W275 
PY  - 2001///
CY  - London
PB  - Lawrence Erlbaum associates
N1  - Includes bibliography references and index
ER  -