[Revealing the history of apothecaries, pharmaceuticals and pharmacies in Catalunya: the library of the apothecary Joan Sardeñons: an example of the possibilities and difficulties of research].

The author takes the catalogue of the library of the major pharmacist Joan Sardeñons as an example. This inventory was in the Hospital of Santa Creu i Sant Pau. Due to the low specialization of cataloguers, a high percent of the volumes are wrongly identified. The author states that the best way to understand this matter, is to study deeper, as professional as scientifically, the inventories used by the pharmacists.