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631.
The impact of conservation easements on rates of habitat loss in agricultural regions
by Braza, Mark Anthony, Ph.D.  University of Maryland, College Park. 2012: 167 pages; 3611338.
634.
636.
637.
Benthic macroinvertebrates in Uvas Creek, California, downstream of a reservoir
by Foster, Carole A., M.S.  San Jose State University. 2014: 93 pages; 1583489.
639.
Analysis of Streambank Erosion in Low Order Streams Using Terrestrial Lidar Data
by Davis, Erienne Amanda, M.A.  Western Illinois University. 2019: 78 pages; 13900356.
641.
Understanding the Efficacy of Fish Ladder Use by Alewife ( Alosa pseudoharengus)
by Sullivan, Kevin M., M.S.  University of New Hampshire. 2017: 126 pages; 10620218.
642.
Analysis and Control of Switched Linear Systems Using Different Switching Strategies
by Duan, Chang, Ph.D.  North Carolina State University. 2013: 169 pages; 3586263.
644.
Student Expectations, University Goals: Looking for Alignment in General Education Science
by Ericson, Rebecca J., D.A.  George Mason University. 2012: 284 pages; 3505270.
646.
Mechanisms of Community Assembly Beneath N-Fixing Trees in a Hawaiian Dry Woodland
by August-Schmidt, Elizabeth Melissa, Ph.D.  University of California, Santa Barbara. 2018: 123 pages; 13423031.
647.
Essays on Energy Economics
by Davies, Michele Rosselot, Ph.D.  The University of Chicago. 2017: 76 pages; 10282808.
648.
Childhood Nature Contact and its Effect on Adult Coping Skills
by Raleigh, Mary-Jeanne, Ph.D.  Antioch University. 2009: 186 pages; 10807600.
649.
Ecological Complexity and Resilience in Integrated Crop-livestock Systems
by Peterson, Caitlin Adair, Ph.D.  University of California, Davis. 2019: 171 pages; 13896512.
651.
Rocket Induced High Altitude Acoustic Waves
by Mabie, Justin John Edward, Ph.D.  University of Colorado at Boulder. 2019: 217 pages; 27662796.
652.
654.
Aerial Righting, Directed Aerial Descent, and Maneuvering in the Evolution of Flight in Birds
by Evangelista, Dennis Jose, Ph.D.  University of California, Berkeley. 2013: 234 pages; 3593829.
655.
Environmental dimensions of colonial settlement: A palynological investigation of La Cienega, New Mexico
by Edwards, Kyle W., M.A.  University of Massachusetts Boston. 2015: 118 pages; 10010750.
656.
Community assembly of benthic invertebrates on island-like marine hard substrata
by Meyer, Kirstin S., Ph.D.  University of Oregon. 2016: 218 pages; 10192050.
657.
Analysis, Modeling, and Control of Highly-Efficient Hybrid DC-DC Conversion Systems
by Zhao, Ruichen, Ph.D.  The University of Texas at Austin. 2012: 190 pages; 3577697.
658.
Assessing Plant Diversity to Enable Continental-Scale Monitoring and Forecasting
by Barnett, David T., Ph.D.  Colorado State University. 2017: 143 pages; 10280597.
659.
Carbon storage and potential carbon sequestration in depressional wetlands of the mid-Atlantic region
by Fenstermacher, Daniel E., M.S.  University of Maryland, College Park. 2011: 258 pages; 1514787.
660.
History, Status, and Resource Selection of the American Black Bear in Mississippi
by Simek, Stephanie Lynn, Ph.D.  Mississippi State University. 2018: 90 pages; 10980505.
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