Kumpulan Daftar Isi Buku 614.4 GER e Epidemiology... : Causal concepts, ( Ket. lihat bab. 2 ) ( halaman 33-59) Gerstman, B. Burt Epidemiology epidemiology methods Canada : Willey-liss, 2003 https://lib.fkm.ui.ac.id:443/detail?id=108522