TY  - BOOK
AU  - Blackstock,Paul W.
AU  - Schaf,Frank L.
TI  - Intelligence, espionage, counterespionage, and covert operations: a guide to information sources 
SN  - 0810313235
PY  - 1978///
CY  - Detroit, Mich.
PB  - Gale Research Co.
KW  - Intelligence service
KW  - Bibliography
KW  - Espionage
KW  - Subversive activities
N1  - Includes indexes
ER  -