Ventilation system
Subtitle: for cold, free-stall barns
Series: Miscellaneous publication / United States Department of Agriculture -- no.      1261
Publisher: U.S. Dept. of Agriculture, Agricultural Research Service
Published: 1973
Place of publication: Washington, D.C
Language: eng
Subjects: Farm buildings; Barns; Designs and plans
Notes: "Cooperative farm building plan exchange, plan no. 6126."