1. Acid precipitation in historical perspective
2. L. Pepe,Aristotele. Meterologica(Napoli: Guida, 1982), p. 185.
3. Cabei Nicolai,In quattuor Libros Metereologicorum Aristotelis Commentaria et Quaestiones, quattuor Tomis comprehensa(Romae: Typis Haeredum F. Corbelletti, 1646), Tomo Primus, pp. 267–83.
4. H. Boerhaave,Ele?nenta Chemiae(Lugduni Batavorum, apud I. Severinum, 1732), 1. We were able to consult only the emended and annotated Paduan edition.