Conservation and biology of small populationsJames N. M. Smith, Lukas F. Keller, Amy B. Marr, Peter Arcese · First published 2006Open the Tome
Grand Canyon National ParkJennifer Denniston, Amy Marr, David Lukas · First published 2004Open the Tome
Yosemite National ParkKurt Wolff, Amy Marr, David Lukas, Cheryl Koehler · First published 2003Open the Tome
