The numbering of the concept list indicates 434 concepts in total. However, in our count and in the count on the website, only 430 items seem to have been defined. To our knowledge, there is no printed publication of the list of concepts. When mapping the concepts to the concepticon, we hade some problems in finding the correct mapping for quite a few concepts. So until we have carried out a proper re-checking of the data, asking the original authors of the concept list for help, the results of this mapping should be taken with a considerable amount of care. Since the BBVD was launched around the first time the ABVD was launched, we assign this source the same year in the reference as we assigned the ABVD.