This study was designed with two major aims. The first was toexamine certain characteristics of both Departmental and Non- Departmentalteachers who were teaching matriculation chemistry in SouthAustralian secondary schools during 1967. The numbers of teacherswho participated were: Departmental 40, and Non - Departmental 23.The second was to ascertain certain learning...
The purpose of this study was to determine the present status
of introduced parasites of the omnivorous leaf tier, Cnephasia
longana (Haworth) in Oregon.
The omnivorous leaf tier is native to Europe. It was introduced
into North America around 1929 and became a serious pest of economic
crops such as...