Quantitative study of ethylene production in relation to respiration of pears 
By: by Elmer Hansen ...
Published: 1946
Place of publication: [n.p
Language: eng
Number of pages: 558
Subjects: Pear.; Fruit -- Composition.; Ethylene.
Notes: "Literature cited": p. 557-558.
Thesis (Ph. D.)--University of Chicago, 1946.
"Contributions from the Hull Botanical Laboratory 538."
"Techinical paper no. 384 ... Oregon Agricultural experiment station, as a contribution of the Department of horticulture."
"Reprinted from Botanical gazette, vol. 103, no. 3, March, 1942."