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Platycnemididae are a family of damselfly called white-legged damselflies.
Photograph of the flea that transmits Yersinia pestis to cause bubonic plague, called the oriental r
The Land Ordinance of 1785 called for surveying and dividing the Western Territories into square mil
Some ignition coils are electrically connected, called married (top figure), whereas others use ...
The illusory bands visible in this figure are often called Mach bands, although Mach used a ...