075.05 Computer Networks and ISDN Systems-Recent items of interest by Phil Enslow (CN/ISDN is published by Elsevier Science Publishers, Amsterdam) "Distributed Operation of the X.500 Directory," B. Smetaniuk, Vol. 21, No. 1 "An Approach to Indirect Protocol Conversion," J.C. Shu and M.T . Liu, Vol. 21, No. 2 "Special Issue on ODA-Open Document Architecture," Vol. 21, No. 3 "Special Issue on High Speed Networking for Research in Europe, RARE," Vol. 21, No. 4 "Special Issue on Protocol Specification, Testing and Verification," Vol. 22, No. 1 "Special Issue on Driving Applications for Future Networks," Vol. 22, No. 2 "Policy Requirements for Inter-Administrative Domain Routing," D. Estrin, Vol. 22, No. 3 "Special Issue on Computer-Network Security" Vol. 22, No. 5