World Health Organization
Sample size determination in health studies : a practical manual. - - Geneva W H O 1991 - 80 p. 29 cm. - .
Health Surveys, Sampling Studies
92 4 154405 8
Sampling Studies
Health Surveys
WA950 / WHO
Sample size determination in health studies : a practical manual. - - Geneva W H O 1991 - 80 p. 29 cm. - .
Health Surveys, Sampling Studies
92 4 154405 8
Sampling Studies
Health Surveys
WA950 / WHO