Shinken Zemi High School Course Regular Test Prediction Problem Collection: Biology Basics. Approximately 20 pages have writing and grading marks. This accounts for about 25% of the entire book. I can combine shipping with other "Regular Test Prediction Problem Collection" series books I have listed, as long as the total thickness is within 3cm. If you would like combined shipping, please comment. I may not be able to accommodate all requests. If it can be shipped via Nekopos, I can offer a slightly lower price. Shipping will be via Rakuraku Mercari Bin Nekopos. If you have any questions, please comment. Please refrain from purchasing if you are looking for perfection or are overly sensitive. Keywords: High School Biology Basics Shinken Zemi Biology Basics Challenge Biology Basics