Development of Improved Vaccines for Heartwater Collins, Nicola E. ; Pretorius, Alri ; Kleef, Mirinda ; Brayton, Kelly A. ; Zweygarth, Erich ; Allsopp, Basil A. Abstract Publication: Annals of the New York Academy of Sciences Pub Date: June 2003 DOI: 10.1111/j.1749-6632.2003.tb07413.x Bibcode: 2003NYASA.990..474C