Purchases of office papers have been slipping for more than three years now because of continued cutbacks in demand from slimmed-down offices and advertising agencies. Office papers generally include bond letterhead, bond copier paper, nonbond stationery, nonbond typing paper, computer paper, notepad paper, tablet paper, business forms and plain envelopes. Supply of all forms of uncoated free sheet papers has declined steadily since 1997 and Lehman Brothers projects continued cutbacks in paper capital spending through this year. Office papers enter the market through paper merchants, contract stationers, office superstores and such original equipment manufacturers as Xerox and Canon. Premium business papers are experiencing the most growth in demand, while general-use papers are growing at a slower pace. INSET: PURCHASING publishes new book on office technologies.