Analysis of information sources in references of the Wikipedia article "Célula" in Spanish language version.
[...]I could exceedingly plainly perceive it to be all perforated and porous, much like a Honey-comb, but that the pores of it were not regular [..] these pores, or cells, [..] were indeed the first microscopical pores I ever saw, and perhaps, that were ever seen, for I had not met with any Writer or Person, that had made any mention of them before this. [...]Hooke
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(ayuda) el 24 de marzo de 2019. Consultado el 27 de agosto de 2017.|urlarchivo=
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(ayuda) el 24 de marzo de 2019. Consultado el 27 de agosto de 2017.