TY  - BOOK
AU  - Lwanga,S.Kaggwa
AU  - Lemeshow,Stanley
TI  - Sample size determination in health studies
SN  - 9241544058 :
AV  - MEDR853.S7 L83 
PY  - 1991///
CY  - Geneva
PB  - World Health Organization
KW  - Sampling (Statistics)
KW  - Public health
ER  -