Shelter environmental support systems.
Series: Technical report - Defense Civil Preparedness Agency -- TR-20
Publisher: Dept. of Defense, Defense Civil Preparedness Agency
Published: 1978
Place of publication: Washington
Language: eng
Subjects: Nuclear bomb shelters -- Environmental aspects.; Nuclear bomb shelters -- Heating and ventilation -- Design and construction.
Notes: Supersedes TR-20 (vol. 3) Environmental engineering for shelters, May 1969.

May 1978.