TY  - BOOK
AU  - Wallert,Werner
TI  - Hostage Terror: Abducted by the Abu Sayyaf
KW  - Wallert, Werner, 1943 - Captivity
KW  - Hostages - Philippines - Biography
KW  - Hostages - Germany - Biography
KW  - Political kidnapping - Philippines
KW  - Terrorism - Philippines - Politics and government
ER  -