921. Zhilishche kolkhozinka dolzhno byt' obraztsom chistoty i opriatnosti Publication: Moskva : Institut sanitarnogo provseshcheniia, Narkomzdrava SSSR, 1940 Subject(s): HousekeepingHygieneUSSR
922. [Zyklon poured down a ventilator, cowl removed, New York, N.Y.] Publication: [194-?] Subject(s): United States. Public Health Service.