The history begins chronologically and that approach continues on up to Vol. 4, after which the volumes split off into modern histories of different branches of science. They are designed to be read as both a narrative and an interpretation, and also used as a work of reference.
vol 2 - Medieval Science
vol 3 - Early Modern Science
vol 4 - Eighteenth Century Science
vol 5 - Modern Physical and Mathematical Sciences
vol 6 - Modern Biological and Earth Sciences
vol 8 - Modern Social Sciences
Encyclopaedia of the History of Science, Technology, and Medicine in Non-Western Cultures by Helaine Selin (Editor)