TY - JOUR T1 - The Abundance of Ammonium-Oxidizing Bacteria in Lake Bonney, Antarctica Determined by Immunofluorescence, PCR and In Situ Hybridization, in Ecosystem Processes in a Polar Desert: The McMurdo Dry Valleys, Antarctica JF - Antarctic Research Series Y1 - 1998 A1 - Mary A. Voytek A1 - Bess B. Ward A1 - John C. Priscu VL - 72 ER -