This page contains grayscale illustrations which can be used in class for instructional purposes. Two versions of each image are provided as a PDF files. The "Screen Version" displays at 72 dpi (dots per inch) and is a smaller file, which can be used for on-screen viewing. The 144 dpi image is a larger file, but should be used for downloading and printing since it will result in a higher quality image on paper or acetate. To view either one simply click on it.
You will need Adobe Acrobat to view the transparencies. If Acrobat is not yet installed on your computer, you can download the Reader from the Adobe site now.
Some resources
on this page are in PDF format and require Adobe® Acrobat® Reader. You can download the free reader
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