GENERAL REFERENCES. 



WEEDS. 



REFERSN'CES FOR SUPPLEMENTARY READING. 



" Weeds in Cities and Towns." Year-book, 189S. 



" Migration of Weeds." Year-book, 1S96. 



" Noxious Weeds." Bulletin 39, Wisconsin Agricultural Ex- 

 periment Station. 



"Russian Thistle." Bulletin 26, Iowa Agricultural Experi- 

 ment Station. 



"Twelve of Idaho's Worst Weeds." Bulletin 14, Idaho Agri- 

 cultural Experiment Station. 



" Noxious Weeds of Wisconsin." Bulletin 76, Wisconsin Agri- 

 cultural Experiment Station. 



" Weeds and How to Kill Them." Farmers' Bulletin 28, 

 United States Department of Agriculture. 



FOREST TREES OF AMERICA. 



" The Uses of Wood." Year-book, 1S96. 



" Tree Planting in Waste Places on the Farm." 



" The Relation of Forests to Farms." Year-book, 1S95. 



" Tree Planting in the Western Plains." Year-book, 1S95. 



" Forestry for Farms." Farmers' Bulletin 67, United States 

 Department of Agriculture. 



" The Testing of Road Materials." Farmers' Bulletin 79, 

 United States Department of Agriculture. 



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