by University of Missouri--Columbia. Agricultural Experiment Station

1919

by Cambridge University Library

1905

by Cambridge University Library

1916

by Cambridge University Library

1913

by University of Cambridge

1916

by University of Missouri. Agricultural Experiment Station

1916

by Yale University. Library

1901

by University of Florida. Agricultural Experiment Station

1888

by University of Missouri

1915

by Stanford University. Food Research Institute

1926

by University of California, Berkeley

1888

by University of California (1868-1952)

1890