TY  - BOOK
AU  - Wragg,E.C.
TI  - An introduction to classroom observation
SN  - 0415096278
AV  - DUCE LB1731.W73  
PY  - 1994///
CY  - London
PB  - Routledge
KW  - Observation (Educational method)
N1  - Includes bibliographical references and index
ER  -