Valuable Research Material: "Flora Reipublicae Popularis Sinicae" (Illustrated Handbook of Higher Plants of China) Volumes 1-5 Set Published during the Cultural Revolution, 1972-1976 * The contents are clean, but due to the age of the books, there are stains and scratches on the covers and exterior. Please refrain from purchasing if you are sensitive to such imperfections. * Due to the nature of used books, the condition of the items generally includes age-related stains and damage. It is difficult to explain every single imperfection in detail. We have provided images to supplement the description, but please make your own judgment based on the images and purchase only if you understand and accept the condition of used books. \*\*\* These are rare and valuable books that are difficult to obtain. If you are interested, don't miss this opportunity.