HOUSING SUBSIDIES URGED FOR SLUMS; Private Capital Cannot Build at a Cost Low Enough, 'Economic Brief' Holds. TWO METHODS SUGGESTED Authority Adviser Says Half of Financing by U.S. Would Draw Private Loans. INTEREST RATE HELD VITAL 20 States Are Listed as Having Already Set Up Laws Making the Plan Feasible. HOUSING SUBSIDIES URGED FOR SLUMS
Submits housing rept to Roosevelt for Natl Pub Housing Conf

