Discoveries by David Healy (astronomer) 1970-01-01
Discoveries by David Higgins (astronomer) 1970-01-01
Discoveries by David H. Levy 1970-01-01
Discoveries by David J. Tholen 1970-01-01
Discoveries by David L. Rabinowitz 1970-01-01
Discoveries by David McDonald (astronomer) 1970-01-01
Discoveries by David Polishook 1970-01-01
Discoveries by David Rankin 1970-01-01
Discoveries by David R. Skillman 1970-01-01
Discoveries by David S. Dixon 1970-01-01
In re Boucher 1970-01-01
National agencies responsible for GDP measurement 1970-01-01
Discoveries by Denise C. Stephens 1970-01-01
Discoveries by Dennis K. Chesney 1970-01-01
Discoveries by Edward Joshua Cooper 1970-01-01
Discoveries by Fabio Dolfi 1970-01-01
Discoveries by Fabrizio Bernardi 1970-01-01
Discoveries by Fabrizio Tozzi 1970-01-01
Discoveries by Federico Bellini 1970-01-01
Discoveries by Felix Hormuth 1970-01-01