Sistema de Lancefield (Spanish Wikipedia)

Analysis of information sources in references of the Wikipedia article "Sistema de Lancefield" in Spanish language version.

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jem.org

Lancefield RC (1933). «A serological differentiation of human and other groups of hemolytic streptococci.». J Exp Med 57: 571-95.

nih.gov

ncbi.nlm.nih.gov

Patterson MJ (1996). Streptococcus. in: Baron's Medical Microbiology (Baron S et al, eds.) (4th ed. edición). Univ of Texas Medical Branch. ISBN 0-9631172-1-1.