Dane Hartman. Hatchet Men (1982) (Dirty Harry #8) 169 pp. [pbo]
Publishers description: From the hills of San Francisco to the towers of Chicago, a savage struggle for power rages between Japanese and Chinese mobsters, expert killers with hand, sword, or gun. Then they kidnap Harry Callahans beautiful part-time lover. Enter the dragon, Dirty Harry—Magnum blazing!
Setting: San Francisco (Chinatown); Chicago