Current practices in elementary school science with reference to courses of study published from 1940 to 1952, and the extent of activities undertaken for the improvement of instruction.

Dubins, Mortimer Ira2016-04-072016-04-0719531953b1462669xhttps://hdl.handle.net/2144/15501Thesis (Ed.D.)--Boston University.en-USBased on investigation of the BU Libraries' staff, this work is free of known copyright restrictions.ScienceCurrent practices in elementary school science with reference to courses of study published from 1940 to 1952, and the extent of activities undertaken for the improvement of instruction.Thesis/Dissertation