ONTSLUIER DIE HEELAL, 'n inleiding tot sterrekunde

353pp., b/w & colour illus., maps, hardback, Second Edition Reprint, Pretoria, (1993) 2008

An introduction to astronomy.

Johannes Ebenhaezer van Zyl (1913-2006) was a senior lecturer in the Department of Applied Science and taught at the Planetarium, University of the Witwatersrand (1970-1982), and was Chairman of the Transvaal  branch of the Astronomical Society of South Africa (1980-1982.)