I use the following regulalrly:
Peter Dunn "The goatkeeper's veterinary book", 4th ed.
Ulrich Jaudas "The new goat handbook"
David Mackenzie "Goat husbandry" (this one is a bit more theoretical, but very interesting, look for the 5th edition)
But have got quite a few more, mainly older secondhand ones from charity shops...
Have got J Matthews "Diseases of the goat" on my Xmas list...
I don't keep pygmies.
Anke