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Parent WikiProject: Wikipedia:WikiProject Chemicals,

This page categorizes pages using importance, through built-in transclusion from {{ Chemicals}}. Importance is judged only in terms of topics within Chemicals. Need: The article's importance, regardless of its quality

Top Subject is a must-have for a print encyclopaedia
High Subject contributes a depth of knowledge
Mid Subject fills in more minor details
Low Subject is peripheral knowledge, possibly trivial
  Top   High   Mid   Low   NA   ??? 
  30    324    2,209    18,428    3,992    577