Gupta, B N Lancefield grouping of streptococci isolated from guinea pig mammary gland and milk. [electronic resource] - American journal of veterinary research Aug 1973 - 1111 p. digital Publication Type: Journal Article ISSN: 0002-9645 Subjects--Topical Terms: AnimalsFemaleGuinea PigsMammary Glands, Animal--microbiologyMilk--microbiologyStreptococcus--immunology