Elementary agriculture of Tennessee, with practical artithmetic . elementaryagricu02hatc Year: 1909 WINDOW VENTILATION PLAN. Note: The above is a modification of the 'King System' of ventilation, a system in successful operation on some of our best dairy farms.

---

Size: 941px × 2125px
Photo credit: © Bookend / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: archive, book, drawing, historical, history, illustration, image, page, picture, print, reference, vintage