Valuation for evolution

Analysis of the problems induced by the adoption of valuation methods in library and documentary information centers. It appears that professional training is not suitable anymore : working methods should be formulated according to the user's needs. The new opening involves a cooperation with experts in management. Most activities in an establishment can be estimated, public libraries as well as special libraries. By the use of inquiries and soundings, together with light automation systems, reliable information can be collected and compared. As information is part of an economical logic, profitability of databanks will be obtained only if their real users - the searchers -are more associated with their setting up.