1.
|
Guilford, Connecticut ; Helena, Montana : TwoDot, 2016. ©2016
|
2.
|
Guilford, Connecticut ; Helena, Montana : TwoDot, 2016. ©2016
|
3.
|
Guilford, Connecticut : Lyons Press, [2016] ©2016
|
4.
|
Guilford, Connecticut : Lyons Press, 2016. [Place of distribution not identified] : National Book Network, [date of distribution not identified] ©2016
|
5.
|
[Washington, D.C. : U.S. G.P.O., 2000]
Y 1.1/8: 106-848 |
|
6.
|
Denver : U.S. Geological Survey, 1993.
I 19.76: 93-510 |
|
7.
|
Washington, D.C. : Dept. of the Interior, U.S. Geological Survey : U.S. G.P.O., 1988.
|