Hello Pete,
you can find these books:
english
http://www.amazon.com/The-Austro-Hungarian-Artillery-From-1867-1918/dp/3902526130
italian Vol. I
http://www.amazon.it/Artiglieria-tr...-germanica/dp/8875412049/ref=pd_bxgy_14_img_y
and austro hungarian manuals...
View attachment 112935
best regards