BACKBONE!cbosgd!clyde!watmath!utzoo
BACKBONE!ihnp4!cuae2!alberta!ubc-vision!burl!ulysses!bellcore
BACKBONE!uw-beaver!tektronix!decvax!linus
BACKBONE!qantel!hplabs!oliveb!glacier!decwrl
BACKBONE!sdcrdcf!hao!sdcsvax!drillsys!gatech!akgua!mcnc!philabs
BACKBONE!lll-lcc!lll-crg!cmcl2!seismo
