The enclosure is 70CM X 40CM and looks like this: http://tortoiseforum.org/new-setup-good-read-for-beginners-t-661.html
my THH in now 8cm long, at 102g
For this, that book is perfect.
Check this out for growth rates in Hermann's.
http://tortoiseforum.org/jackson-ratio-for-hatchling-tortoises-t-799.html
You might want to see these posts:
http://tortoiseforum.org/mazuri-tortoise-diet-t-951.html
http://tortoiseforum.org/mazuri-part-1-t-1893.html
http://tortoiseforum.org/mazuri-part-2-t-1892.html
cheers,
T.
hello and welcome to the board.
I'm currently reading 'Hermann's Tortoise, Boettger's and Dalmatian Tortoises: Testudo boettgeri, hercegovinensis and hermanni (Chelonian Library, Volume 2)'.
My guess is if you found 'Practical Encyclopaedia of Keeping and Breeding Tortoises and Freshwater...