TY - CONF A1 - Unknown, T1 - Beach health. N1 - R829339 ER - TY - CONF A1 - Unknown, T1 - The EMPACT project. N1 - R829339 ER - TY - CONF A1 - Unknown, T1 - The development of the E. coli O157:H7 method. N1 - R829339 ER -