Enseignement Complet du Basson V2-BSN

Enseignement Complet du Basson V2 
for bassoon
by Fernand Oubradous (1903-1986)- French bassoonist, composer, and conductor

The second volume in Obradous' masterful bassoon method contains exercises in all Major and minor keys with four or more flats and sharps.
Volume 1 is available here. 
Volume 3 is available here.