Root-stem transition of Opuntia engelmannii Salm-Dyck
By: by William Mayne Longnecker.
Publisher: University of Chicago Libraries
Published: 1941
Place of publication: Chicago, Illinois
Language: eng
Subjects: Opuntia engelmanni.; Cactus.
Notes: Bibliography: p. 6.
Thesis (Ph. D.)--University of Chicago, 1941.
Lithoprinted.