Yolanda Rios
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Recursos
General chemistry online
imbiomed
centro de inVestigaciones químicas
plants of the world on line
Global Biodiversity Information Facility
Spectral Database for Organic Compounds
Tropicos
International Plant Name Index (IPNI)
common compound library
Pipper annum
capsicum baccatum
Leucophyllum ambiguum
echinacea purpurea
