@misc{10498/13171,
year = {1921},
month = {5},
url = {http://hdl.handle.net/10498/13171},
publisher = {Madrid :
   
     Imp. de M. Rojas,},
booktitle = {Tomo 68},
title = {El siglo médico
   Tomo 68 Nº3519 (21/05/1921)},
author = {},
}