dewey-ones:"000 - Computer science, information & general works" dewey-ones:"140 - Specific philosophical schools" dewey-ones:"333 - Economics of land & energy" dewey-ones:"380 - Commerce, communications & transportation" dewey-ones:"620 - Engineering & allied operations" dewey-ones:"700 - The arts; fine & decorative arts" dewey-ones:"900 - History & geography"