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An old seventies trend was making its way back into the suburban homes of Montreal, Quebec. Husbands and wives were having consensual sex with other married couples and trying to keep the secret under wraps, unsuccessfully. Swapping. Swinging. An organized sex agreement; and to a thirty-nine year-old mother of two, like Valerie Matthews, the idea was riveting. With forty looming, Val wanted to spice...

The editorial series Freshwater Fauna of Poland has existed since 1935. Up to now 22 volumes (in Polish) have been published, treating both vertebrate and invertebrate animals. Particular volumes contain rich general data concerning described taxa and detailed information on species, genera, families and orders. Integral parts of all volumes are identification keys. Thanks to such a way of presentation,...