I purchased this some time ago and give this only 2 stars because I discovered the tabs carved into the pages indicating the letters of the alphabet are in some cases incorrect..for example, open where it indicates the VZ entries should be and you will instead find "biological names." This is just carelessness on the part of the publisher and really quite inexcusable. For this reason, I wouldn't recommend this dictionary. Had I known this before I purchased it, I would not have bought it.