UDC Biology Revision Project: First Stage: Class 59 Vertebrates

Extensions & Corrections to the UDC, 32 (2010), pp. 9-20. Ver "Bibliotecario" (http://biblio-tecario.blogspot.com.es/).

Extensions & Corrections to the UDC, 32 (2010), pp. 9-20. Ver "Bibliotecario" (http://biblio-tecario.blogspot.com.es/). Less