officed Some masterpieces are out of print, and not yet reprinted at very low cost, as does e.g. Dover Publishing Company. Until there, many salespersons who opereate on web platforms like Amazon, AbeBooks etc, will try their best to make outrageous profits. Before the 1980s, generaly speaking, the academic manuals were suffering of underdevelopment in every aspects. The didactics of infinitesimal calculus and linear algebra, also of physics, have taken a century to correct pitfalls, traps and ambiguities. The American Government took very long to awake & realized that, in order to promote math & physics in the brain of the Youth, big money should be every year invested in expensive paper, colours, hardcovering etc, not only in aerospace missions to other planet(s) with rockets. Before 1982, the Bibles, a handful of reputated dictionaries & encyclopedia, the Life magazine, the manuscripts at notary/chapel/city-hall or at land-surveyer office, etc were alone of high qualities; not the manuals for school, college & university. ____________ I own a copy of ''Calculus and Analytic Geometry" edited in 1982, written by Mizrahi & Sullivan. In the preface the authors admit that there were many good books on calculus already, but they aren't interesting: they are done to please to the eventual teachers. So they did a very interesting manual and easy-to-read manual, built for the student.
