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available on-line: [http://www.clr.pdx.edu/docs/clr_nutria_report.pdf]== external links ==*history, distribution and spread of coypu introductions worldwide; efforts to eradicate with links to other nutria sites* the effect of nutria on marsh loss in the lower eastern shore of maryland undated usgs report*portland state university report on coypus in the pacific northwest of north america.
==referințe==== bibliografie ==*bud, ioan, Ștefan reka, "animale de blană", editura risoprint, cluj napoca, 2006==legături externe==*history, distribution and spread of coypu introductions worldwide; efforts to eradicate with links to other nutria sites* the effect of nutria on marsh loss in the lower eastern shore of maryland undated usgs report*portland state university report on coypus in the pacific northwest of north america.
