Energy Development Plan Offers Priorities for U.S.
Energy Research and Development Adm issues natl energy development plan that increases outlays for solar energy and conservation but stresses Ford Adm's continuing view that top priorities must go to coal and harnessing energy of atom; Admr Seamans says he expects to approve environmental impact statement required for development of breeder reactor; says more information, particularly on health hazards of plutonium, is needed; power from nuclear fusion also envisioned in plan (M)