00000cam a22000004a 4500 UP-1685523046125144798 Buklod 20230503092606.0 aa r |||| u| ta 071031s xx d r |||| u| 0443037876 (iLib)UPMNL-00000025685 Med RA 652.4 B37 1991 Barker, D. J. P. (David James Purslove) Practical epidemiology D.J.P. Barker, A.J. Hall. 4th ed. Edinburgh Churchill Livingstone c1991. 170 p. ill. 22 cm. Epidemiology Technique. Hall, A. J. (Andrew James). UPMNL MED RA 652.4 B37 1991 Book