found: Ecosystems of disturbed ground, 1999:CIP t.p. (L.R. Walker; Dept. of Biological Sciences, Univ., of Nevada, Las Vegas, Las Vegas, NV) book t.p. (Lawrence R. Walker)
found: Primary succession and ecosystem rehabilitation, 2003:CIP t.p. (Lawrence R. Walker) data sheet (b. Sept. 11, 1951)
found: A natural history of the Mojave Desert, 2018:ECIP t.p. (Lawrence R. Walker) data view (Lawrence R. Walker, prof., School of Life Sciences, Univ. of Nevada-Las Vegas)
found: A guide to common plants of Lake Mead National Recreation Area, 2022:CIP title page (Lawrence R. Walker) data view (Lawrence Reddeford Walker; born 1951)