00837nam a2200277 u 4500 603346 20260506084527.0 000622s1990 eng 0443041962 603346 (OCoLC)777777099 comduadb eng W Abramson, Joseph Herbert aut aut 483636 Survey methods in community medicine : epidemiological studies, programme evaluation, clinical trials / DYTG 4.ed. Estados Unidos : Churchill Livingstone, 1990. 339p. Epidemiología lemb 5453 Medicina comunitaria 20989 Encuestas de salud 20490 Salud pública dcs 32016 Investigación en salud 20519 BOOK 155502 155502 0 0 0 0 SEMIACTIV2 BSP BSP 2000-06-22 C638696 0 W84.5 A2-90 61000002318760 2023-04-22 00:00:00 1 2023-04-22 BOOK