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Filtering by: Date issued sim 1978-06-09 Remove constraint Date issued sim: 1978-06-09 Resource Type Dissertation Remove constraint Resource Type: Dissertation

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Effects of temperature and other abiotic and biotic factors on development and survival of the immature stages of the alfalfa leafcutting bee, Megachile pacifica (Panzer) (=rotundata (F.)) (Hymenoptera:Megachilidae)

Creator:

Undurraga O., Jaime M.

Abstract:

Larval mortality of leafcutting bee, Megachile pacifica (Panzer) (= rotundata (F.)), is high, usually exceeding 50%. Parasites and predators are not a limiting factor in the survival of the progeny. The disease chalk brood has been an important mortality factor since 1974. Inadequate food supply, pollen and nectar, may affect...

Resource Type:

Dissertation
Selected factors affecting the pattern of agricultural land conversion in Washington County, Oregon, 1963-1973

Creator:

Furuseth, Owen J., 1949-

Abstract:

In recent years the conversion of agricultural lands to more intensive non-rural land uses has become a focus of increasing public awareness and concern. The growing attention to farmland conversion is manifested in increasing public policies and legilsation to protect agricultural and forestry land uses. Nevertheless, our understanding of the...

Resource Type:

Dissertation
A comparison of men and women vocational educators' present and expected levels of work satisfaction as related to selected work values

Creator:

Tremain, June Ellen

Resource Type:

Dissertation
Older and younger students, full-time and part-time : a comparison of their perceptions of the campus environment at Oregon College of Education

Creator:

Yates, Douglas Page

Abstract:

Older and part-time students are enrolling in institutions of higher education in increasing numbers, yet little research has been conducted to see if these students perceive the campus environment differently from younger, full-time students. The purpose of this study was to compare the perceptions of the college environment of four...

Resource Type:

Dissertation
Resource combination and product-mix in Oregon seafood processing

Creator:

Chong, Kee-Chai

Resource Type:

Dissertation

Limit your search

Academic Affiliation

Agriculture and Resource Economics1
Entomology1
Geography1
School of Education1
Vocational-Technical Education1

Advisor

Grigsby, Thomas E.1
Pease, James R.1
Smith, Frederick J.1
Stephen, Willam P.1
Wallace, Sharon A.1

Commencement Year

19795

Committee Member

Simmons, Dale2
Anderson, N. H.1
Berry, R. E.1
Colbert, Mike1
Fendall, Roger1
more Committee Members »

Creator

Chong, Kee Chai1
Furuseth, Owen J., 1949 1
Tremain, June Ellen1
Undurraga O., Jaime M.1
Yates, Douglas Page1

Date

19785

Decade

1970-19795

Degree Field

Agricultural and Resource Economics1
Education1
Entomology1
Geography1
Vocational Education1

Degree Level

Doctoral5

Degree Name

Doctor of Philosophy (Ph.D.)3
Doctor of Education (Ed.D.)2

Language

English [eng]5

Non-Academic Affiliation

Oregon State University. Graduate School5

Peer Reviewed

No5

Resource Type

Dissertation[remove]5

Rights Statement

Copyright Not Evaluated4
In Copyright1

Subject

Alfalfa leafcutting bee1
Fishery processing -- Oregon1
Land use, Rural -- Planning -- Oregon -- Washington County1
Oregon College of Education -- Students1
Vocational teachers1

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