Mark Powell

发表

The Potential of U.S. Cropland to Sequester Carbon and Mitigate the Greenhouse Effect . R. Lal, J.M. Kimble, R.F. Follett, and C.V. Cole. 1999. CRC Press LLC, Boca Raton, FL. xv + 128 p. $58.90, ISBN 1-57504-112-X, hardcover.

Mark Powell, M. Powell, 2001 .