microscopio

https://conteni2.educarex.es/mats/14379/contenido/

http://www3.gobiernodecanarias.org/medusa/ecoescuela/recursosdigitales/2014/11/13/microscopio-virtual-de-genmagic/

https://www1.udel.edu/biology/ketcham/microscope/scope.html

https://www1.udel.edu/biology/ketcham/microscope/scope.html