For well over twenty years I used the same little dose and calculation book to study up for review test. It was orange and about the size of a Readers Digest only thicker. That was the neatest little book and I never had a single problem with a dose and calculation test. However, I can't find it and I can't remember it's name to see if I can buy later edition. It might be called Dose and Calculations or something on that line but I can't be sure. Sound familiar to anyone?