A biosystematic investigation was undertaken in 15
species and three subspecies of the genus Aster, in western
North America. Previous studies had been based entirely on
external morphological features, and it was believed that
much could be learned about the natural affinities of the
taxa by exploring their cytological and...
A mathematical model of a differential thermal analysis (DTA)
system was formulated so that influence of the various physical parameters
on the DTA peak could be determined. The specific DTA apparatus
simulated had cylindrical sample holes drilled into a nickel
block considered to have a negligible thermal resistance, and the...
The purpose of this study was to assist the development of an
improved industrial arts curriculum and laboratory facilities that
reflect the industrial technology. The project attempted to
ascertain which of the process operations of the technology may
become curricular components in the curriculum. In addition, it
attempted to identify...
The purposes of this study were: to collect information relative
to the content of the sex education information adolescents have received
from selected sources, to ascertain their appraisal of the
value of this information and to test hypotheses concerning communication
and dissemination of information on sexual topics between
adults and...
The ecology of a population of snowshoe hares, Lepus
americanus washingtonii, was studied in western Oregon from 1960
to 1962. Objectives were to obtain information to control hares,
which frequently cause damage to coniferous reproduction in the
region, and to compare the life history of this little-studied subspecies
with others....
The purpose of the work is to enable students of botany to identify
accurately Oregon ferns, both as living plants and as dried specimens.
Therefore, it provides vegetative keys to the families, genera
and species of the ferns (Class FILICINAE) found in Oregon. Correct
names have been determined using the...