Bulletin
U.S. Department of Agriculture. Division of Agrostology
Government Printing Office
by P. Beveridge Kennedy
Government Printing Office 1900 Bulletin / U.S. Department of Agriculture. Division of Agrostology no. 22 : Grass and forge plant investigations
所蔵館1館
by F. Lamson-Scribner
Government Printing Office 1897-1900 Bulletin / U.S. Department of Agriculture. Division of Agrostology no. 7, no. 17, no. 20
[1] , 2 , 3
所蔵館3館