Hedstrom, I., & Sahlén, G. A key to the adult Costa Rican helicopter damselflies (Odonata: Pseudostigmatidae)with notes on their phenology and life zone preferences.
Chicago Style CitationHedstrom, Ingemar, and Goran Sahlén. A Key to the Adult Costa Rican Helicopter Damselflies (Odonata: Pseudostigmatidae)with Notes On Their Phenology and Life Zone Preferences.
MLA CitationHedstrom, Ingemar, and Goran Sahlén. A Key to the Adult Costa Rican Helicopter Damselflies (Odonata: Pseudostigmatidae)with Notes On Their Phenology and Life Zone Preferences.
Warning: These citations may not always be 100% accurate.