In this document the author attempts to set forth the activities, items, or criteria susceptible of development in librarianship, information science, and bibliography. The list attempts to include all facets of a reasonably extensive development, one which no country has quite reached. On the other hand, among highly developed countries, progress on many individual items may have far surpassed the levels suggested here. It is not assumed that these items are of equal importance, nor that they are of equal urgency in every country, nor that priorities should be equal everywhere. For a country to rate well on this list, these facets must not only exist, but must exist in well organized form. Further, while the list usually specifies one of each item, obviously, two or more of that item would show a better development. However, the primary purpose of the list is to suggest the extensiveness of development, not its intensiveness. The 68 most important facets of a mature library and bibliographic development are designated. Their use as an instrument to measure national library and bibliographic status is described, using Iranian progress from 1967 to 1971 as an example. (LI 004244 through 004254 and LI 004256 through 004267 are related.) (Author/SJ)