([Agroscope, Apicoltura > Prodotti apistici > Cera > Cera d'api, 1999, p. 1, Internet](http://www.agroscope.admin.ch/imkerei/01810/01816/index.html?lang=it&download=NHzLpZeg7t,lnp6I0NTU042l2Z6ln1ah2oZn4Z2qZpnO2Yuq2Z6gpJCDeHt5gmym162epYbg2c_JjKbNoKSn6A--))