Hyacinth Klose Celebrated Method for the Clarinet

From Carl Fischer website:

This authoritative and completely re-engraved edition of the Celebrated Method for Clarinet has been edited by Stanley Drucker, former New York Philharmonic Principal Clarinet, and his wife and colleague Naomi Drucker, Professor of Clarinet at Hofstra University. The new layout allows for much easier reading during practice and performance while preserving the pedagogical nature of the method. Purists and modernists alike will welcome this modernized edition. The new edition includes the addition of Rose Etude excerpts, expansion of Kroepsch Studies, and complete Grand Duets for study and performance.