The Pollination question.
Contributors: Oregon Agricultural College. Experiment Station.
Series: Circular bulletin / Oregon Agricultural College Experiment Station -- no. 20.; Circular bulletin (Oregon Agricultural College. Experiment Station) -- no. 20.
Publisher: Oregon Agricultural College Experiment Station
Published: 1912
Place of publication: [Corvallis, Or.]
Language: eng
Subjects: Pollination.
Notes: Caption title.