Contributions from the Botanical Laboratory of the University of Pennsylvania.

1, 1892-1897

Contributions from the Botanical Laboratory of the University of Pennsylvania.

5, 1919-1920

Occasional papers of the Museum of Natural History, the University of Kansas.

no.10 (1972)

Occasional papers of the Museum of Natural History, the University of Kansas.

no.15 (1973)

Annual report of the Agricultural Experiment Station / Cornell University, College of Agriculture.

1894

Annual report of the Agricultural Experiment Station / Cornell University, College of Agriculture.

1893

Annual report of the Agricultural Experiment Station / Cornell University, College of Agriculture.

1897

Annual report of the Agricultural Experiment Station / Cornell University, College of Agriculture.

1900

Occasional papers of the Museum of Natural History, the University of Kansas.

no.14 (1973)

Occasional papers of the Museum of Natural History, the University of Kansas.

no.13 (1973)

Annual report of the Agricultural Experiment Station / Cornell University, College of Agriculture.

1896

Occasional papers of the Museum of Natural History, the University of Kansas.

no.11 (1972)

Occasional papers of the Museum of Natural History, the University of Kansas.

no.5 (1971)

Occasional papers of the Museum of Natural History, the University of Kansas.

no.12 (1973)

Occasional papers of the Museum of Natural History, the University of Kansas.

no.71-95 (1978-1981)