Copyright Extension of the Istituto Lombardo, PaviaNo part of this electronic representation of "The Opere di Alessandro Volta" may be used for publication or for commercial purposes without explicit and written permission by the Istituto Lombardo of the Accademia di Scienze e Lettere, Pavia, via Borgonuovo 25, 20121 Milano, tel +39 02-864087, fax +39 02-86461388, mail Istituto.Lombardo@unimi.it |