ISSN Record 2474-851X

This resource has been partly archived by the keepers network.

Archival Status
Publisher	Keeper	Status	Last updated
on 1
National Aeronautics and Space Administration, [1987]-	HathiTrust	Preserved	2025-11-01
13 1989; 12 1988; 11 1987; v.11 :Index 1987; v.14:no.1 1990; v.14:no.2 1990; v.14:no.3 1990; v.14:no.5 1990; v.14:no.6 1990; v.14:no.7 1990; v.14:no.8 1990; v.14:no.9 1990; v.14:no.10 1990; v.14:no.11 1990; v.1/5:index (1976/80); v.11:no.1/10:index (1987); v.6/10:index (1981/85); v.12:no.1/11:index (1988); v.14:no.1/12:index 1990; 1993:index = 17/1-12/IND.; 1994:index = 18/1-12/IND.

2:: Master and use copy. Digital master created according to Benchmark for Faithful Digital Reproductions of Monographs and Serials, Version 1. Digital Library Federation, December 2002.

4:: Latest issue consulted: 10-13 (October 2013) (purl.access.gpo.gov, viewed Nov. 2, 2016)