TY - RPRT TI - Urease-encoding genes in ammonia-oxidizing bacteria. AU - Teresa E Koper AU - Amal F El-Sheikh AU - Jeanette M Norton AU - Martin G Klotz PY - 2004 DO - 10.1128/aem.70.4.2342-2348.2004 UR - https://pubmed.ncbi.nlm.nih.gov/15066830/ ID - 15066830 ER -