1. La razón de la fuerza González Calleja, Eduardo
by González Calleja, Eduardo 
Price: USD 334.84
Dealer: Abebooks, Iridium_Books
Description: ISBN10: 8400077784, ISBN13: 9788400077785, [publisher: Consejo Superior de Investigaciones Cientificas] Softcover [DH, SE, Spain] [Publication Year: 1998]  

2. La razón de la fuerza
by González Calleja, Eduardo 
Price: USD 430.19
Dealer: Abebooks, Zilis Select Books
Description: ISBN10: 8400077784, ISBN13: 9788400077785, [publisher: Consejo Superior de Investigaciones Cientificas] Softcover [Madrid, M, Spain] [Publication Year: 1998]