Usinger, Robert L..
Aquatic Insects of California: With Keys to North American Genera and California Species, Berkeley: University of California Press, 1956.
https://doi.org/10.1525/9780520320390
Usinger, R. (1956).
Aquatic Insects of California: With Keys to North American Genera and California Species. Berkeley: University of California Press.
https://doi.org/10.1525/9780520320390
Usinger, R. 1956.
Aquatic Insects of California: With Keys to North American Genera and California Species. Berkeley: University of California Press.
https://doi.org/10.1525/9780520320390
Usinger, Robert L..
Aquatic Insects of California: With Keys to North American Genera and California Species. Berkeley: University of California Press, 1956.
https://doi.org/10.1525/9780520320390
Usinger R.
Aquatic Insects of California: With Keys to North American Genera and California Species. Berkeley: University of California Press; 1956.
https://doi.org/10.1525/9780520320390
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