Biology and ecology of two predators : Geocoris palens Stål and G. bullatus (Say) /

Caption title.

The biology and ecology of the red-headed pine sawfly /

Cover title.

Pine root collar weevil : its ecology and management /

"February 1983."

The nature, ecology, and control of Canada thistle

Bibliography: p. 31-32.

Biology, ecology, and control of the lodgepole needle miner /

Includes bibliographical references (p. 36-38).

Ecology and silviculture of western larch forests /

Bibliography: p. 61-66.

Ecology of the green peach aphid as a vector of beet western yellows virus of sugarbeets /

Issued Aug. 1979.

Assateague Island National Seashore. Hearing, Eighty-eighth Congress, second session, on S. 2128. August 11, 1964.

Mode of access: Internet.

Assateague Island National Seashore. Hearings, Eighty-ninth Congress, first session, on S. 20 and S. 1121.

"S. 20 and S. 1121, bills to provide for the establishment of the Assateague Island National Seashore in the States of Maryland and Virginia, and for other purposes."

The Sierra ecology project.

"The Sierra Cooperative Pilot Project, United States Department of the Interior, Bureau of Reclamation, Division of Research, Office of Atmospheric Resources Management, Denver, Colorado."

Ecology of the pea aphid in the Blue Mountain area of eastern Washington and Oregon /

Caption title.

Bibliography of freshwater wetlands ecology and management.

"Updated and expanded by Stanton J. Kleinert"--Pref.

Physiographic Ecology 1911 Three Oaks, Mich.

[George Damon Fuller and students of a University of Chicago Department of Physiographic Ecology class.]

Land use survey; proposed Point Reyes National Seashore.

Mode of access: Internet.