Books on Tropical Inverts

[Jimmy Twotimes]

Guys

I've been looking for a book on Tropical inverts (shrimps, snails, crabs etc) but cant find one. Lots of MARINE inverts but nothing for tropical.

I kno wthere is loads of info on the Web but sometimes I like to sit and read a book for info rather than trawl the net (you understand I'm sure!).

Any ideas, looked on Ebay but no luck...

Any info appreciated...