1. The Birkman Method Manual
by Unknown Author 
Price: USD 56.15
Dealer: ZVAB, WeBuyBooks
Description: ISBN10: 0981709907, ISBN13: 9780981709901, [publisher: Birkman International, Incorporated] Most items will be dispatched the same or the next working day. [Rossendale, LANCS, United Kingdom]  

2. The Birkman Method Manual
by Unknown Author 
Price: USD 60.09
Dealer: AbebooksUK, WeBuyBooks
Description: ISBN10: 0981709907, ISBN13: 9780981709901, [publisher: Birkman International, Incorporated] Most items will be dispatched the same or the next working day. [Rossendale, LANCS, United Kingdom]