STATES STEP UP AID TO AILING LOCALITIES
50-state survey by Advisory Comm on Intergovt Relations finds vast increase in states' financial assistance to local govts in last yr; finds initiatives directed to urban areas in Northeastern and North-Central states, to econ and community development needs of rural areas and small towns in Southeastern and South-Central states, and to area planning and environmental protection in Western and Northern Plains states; notes different forms state econ development assistance may take; attributes stepped up activity on state level to White House Conf on Balanced Natl Growth and Econ Development, held in Jan '78, which sought to turn states' attention to needs of local communities, and to grants and other incentives provided by Carter Adm to further that aim; notes new trend could be reversed by concurrent effort to cut back taxes and institute spending limits within states (M)