Elements of ecologyThomas M. Smith, Robert Leo Smith · First published 2005 · Latest edition 2008Open the Tome
Elements of EcologyRobert Leo Smith, Thomas M. Smith · First published 1986 · Latest edition 2001Open the Tome
Study guide to accompany Ecology and field biologyRobert Leo Smith · First published 1996Open the Tome
A comparison of fifth grade students with a professional physical education teacher and a regular teacherEarl Leo Smith · First published 1981Open the Tome
