|aOn the various forces of nature and their relations to each other :|ba course of lectures delivered before a juvenile audience at the Royal Institution /|cedited, and with a pref. and notes, by William Crookes ; with a new introd. by Keith Gordon Irwin.
|aNew York :|bViking Press,|cc1960.
|axxiv, 106 p. :|bill. ;|c20 cm.
|aViking explorer books, X11
|aFirst published in 1860 under title: A course of six lectures on the various forces of matter and their relations to each other.