His The principle of moments [SR] p1983 label (Robert Plant)
Int. ww in mus., v. 2, pop. mus., 1st ed. (Plant, Robert Anthony; b. Aug. 20, 1948, West Bromwich, Warwickshire, England; singer, songwriter)
Wikipedia, June 28, 2013 (Robert Plant; Robert Anthony Plant CBE; born August 20, 1948, West Bromwich; English musician, singer, and songwriter, best known as the lead vocalist and lyricist of the rock band Led Zeppelin)