TY  - BOOK
AU  - DEREK COLQUHOUN
TI  - HEALTH RESEARCH IN PRACTICE,PLITICAL,ETHICAL AND METHODOLGICAL ISSUES
SN  - 0-412-47470-0
U1  - 362.1072 1ST
PY  - 1993///
CY  - LONDON
PB  - CHAPMAN AND HALL
ER  -