TY - BOOK AU - Casas,Willie AU - Araja,Rio N. TI - US saliva test 99% effective; found to be cheaper, simpler KW - found to be cheaper KW - 99% effective KW - US saliva test UR - http://elibrary.doh.gov.ph/cgi-bin/koha/opac-retrieve-file.pl?id=490a27c52b0176f5686fc17433405ef8 ER -