Small and medium enterprises (SMEs) in all industrial countries have a great need for technical and scientific data and product and market information. SMEs also produce useful information of mutual benefit for themselves. A proper and healthy development of SMEs in developing, as well as in many industrialized countries in Europe and elsewhere will require a number of support services, among which the development of infrastructural information services is a key element. Rapid progress in information technologies has reduced the cost and increased the availability of powerful workstations,...