G. Zech

Literature 1983, Part 1

Literature 1987, Part 2

Author and Subject Indexes to Volumes 1–10 Literature 1969–1973

Literature 1984, Part 2

Literature 1986, Part 1

Astronomy and Astrophysics Abstracts

Literature 1985, Part 2

Literature 1974, Part 2

Literature 1984, Part 1

Literature 1988, Part 1

Literature 1987, Part 1

Literature 1981, Part 2

The determination of the mass of the earth+moon system by the dynamical method from observations of Eros