This lot includes two Rubank Advanced Method Clarinet workbooks, both in paperback format. The first and second volumes are authored by H. Voxman and William Gower. The workbooks are designed for advanced clarinet players and cover a range of topics, including music theory and technique. The books are published by Rubank and are recommended for those looking to improve their skills on the instrument. The publication name is "Advanced Method" and the instrument is the clarinet. This lot falls under the categories of Musical Instruments & Gear and Instruction Books, CDs & Video.