Books offered are used specialized books. We define the condition as follows:
As good as new = Edition in a mint condition with no signs of wear or any damage or marginalia.
Very good = Edition in a very good condition with no more than negligible damage to pages or cover. Age-related signs of usage are limited to an absolute minimum. Marginalia are very rare.
Good = Edition in a good condition with slight damage to pages or cover as occasional bends. Slight age-related signs of usage are present, but do not interfere with utilization. Marginalia may be present to a limited extent.
Acceptable= Edition in a decent condition with some damage to the pages or cover. Mild to significant age-related signs of usage are present, but do not interfere with utilization. Marginalia may be present on a larger scale.