The antibiotics, streptomycin sulfate and oxytetracycline, are used widely for fire blight suppression in the Pacific Northwest region of the United States. The efficacy of streptomycin, however, is compromised by widespread streptomycin-resistance in E. amylovora populations, and oxytetracycline is only partially effective. Consequently, for several years, the aminoglycoside antibiotic, kasugamycin...
The purpose of this study was to determine the readability of three
series of selected fourth, fifth and sixth grade social studies textbooks,
a total of nine textbooks. Two measurements were utilized: a readability
formula (Fry Readability Graph; Knapp, 1971), and group informal reading
inventories.
The Fry Graph was applied...
Storage of water for water quality control is one of the alternative
means of achieving water quality objectives. Authorities in
the field of water quality management disagree regarding the use of
precious water for the dilution of wastes.
The costs of achieving water quality objectives by treatment
of wastes at...
Harlequin ducks (Histrionicus histrionicus) were observed during
the summers of 1979 and 1980 in Sawmill Bay, northeast Prince William
Sound, Alaska. Harlequins were associated with a short, medium gradient,
non-glacial stream (Stellar Creek) also used by salmon. Although
harlequins nested along Stellar Creek, they apparently did not establish
home ranges...