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An inventory of stylet-bearing nematodes in Ohio [PDF]

open access: yes, 1961
Walker, J. T., Wilson, J. D.
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DNA barcoding: species delimitation in tree peonies

Science in China Series C: Life Sciences, 2009
Delimitations of species are crucial for correct and precise identification of taxa. Unfortunately "species" is more a subjective than an objective concept in taxonomic practice due to difficulties in revealing patterns of infra- or inter-specific variations.
JinMei, ZHANG   +3 more
openaire   +4 more sources

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