DENVER. METROPOLITAN AREA. BUILDINGS. OFFICE Leasing plunged 24% in 1984 because of excess supply. RMN F 19, 1985 p.2B Developers offer law libraries to gain edge in lease competition for attorney tenants. RMN My 7, 1985 p.6B Only major city in U.S. where office lease rates did not increase,last year.: RMN Ap 9, 1985 p.26B 0