1982-04-01 /BB-H311C-RM/01/swskit-utilities/environment.bli 1982-04-01 /SRI_NIC_PERM_SRC_3_19910112/01/stanford/5-swskit/environment.bli 1984-12-10 /BB-H311D-RM/01/swskit-tools/environment.bli 1985-06-13 /QT020_T20_4.1_6.1_SWSKIT_851021/01/swskit-tools/environment.bli