TY  - BOOK
AU  - Hulley,Stephen B.
AU  - Cummings,Steven R.
TI  - Designing clinical research: an epidemiologic approach 
SN  - 0683042491
U1  - 610.72 DES 23
PY  - 1988///
CY  - Baltimore
PB  - Williams & Wilkins
KW  - Clinical trials
KW  - Technique
KW  - Medicine
KW  - Research
KW  - Methodology
KW  - Biochemistry
N1  - Includes index
ER  -