John Polk wrote:Here are 2 books, published in 1926 & 1927.
They (and many more), are free downloads from the Soil and Health Library in Australia.
Root Development of Vegetable Crops
Root Development of Field Crops
Thank you so very much for sharing these resources. The illustrations are wonderful. Much obliged.
Their home page links to their 4 sections, but they have another section (homesteading) that is not listed there - perhaps they haven't updated the site recently. http://www.soilandhealth.org/03sov/0302hsted/0302homested.html
Australian copyright laws are different than ours. Once a book goes out of print, it becomes 'fair game' for libraries to lend:
Australian libraries are allowed to provide clients with electronic copies of copyrighted materials for purposes of study only when it has been first determined that these materials are out of print and cannot be obtained through the usual channels of retail trade.
Sounds reasonable to me !