Mathematics
Mathematics Information Servers
Societŕ Matematica Svizzera; Unione Matematica Italiana;
Number theorists homepages and their new listings ; Conferences in number theory. And now also the italian mirror site of Number theory web.
Eric Weissenstein world of mathematics
Astronomy
The nine planets; very nice;
Astronomical picture of the day.
Southern-East Sicily
Ispicaweb.it,
a complete site about Ispica.
Ragusa on line
with a photogallery of Ispica.
Ragusa e provincia by ragusa.net (very interesting)
Ragusa e provincia by ibla.net
Miscellaneous
Swiss European railway timetable;
Ferry boats among Italy and Mediterranean sea
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Giuseppe Melfi's home page