3 Cisco PIX books
2 Cisco Pix Books
Cisco ASA - All-in-One Firewall, IPS, and VPN Adaptive Security Appliance 2005
http://rapidshare.de/files/25008999/pix1.rar
Cisco Systems - Securing Networks with PIX and ASA. SNPA. Student Guide. v4.0. 2005
http://rapidshare.de/files/25009314/pix2.rar