GUTIERREZ, J Interrelationship between certain bacteria and the rumen ciliate Dasytricha ruminantium. [electronic resource] - Science (New York, N.Y.) Sep 1957 - 511 p. digital Publication Type: Journal Article ISSN: 0036-8075 Standard No.: 10.1126/science.126.3272.511 doi Subjects--Topical Terms: AnimalsBacteriaCiliophoraGadiformesNitrogen--metabolismRumen