<p>Each of the sixty-six species of freshwater mussels from Pennsylvania waters (including extant and extirpated species) is described and illustrated by the author. Al Spoo provides multiple views for each species on full-color plates, and offers keys for distinguishing them. Freshwater mussels are a rapidly disappearing resource, and this book offers a detailed look at these fascinating natural treasures.</p>

The Pearly Mussels of Pennsylvania

Science & Math

Spoo, Al

Biological Sciences

Coachwhip Pubns

Nature Notes collects Al Spoo's bimonthly newspaper column on the plants, animals, and ecology of Lancaster County, Pennsylvania, and elsewhere. Each informative section is accompanied by his own illustrations, opening eyes to natural subjects that are often overlooked.

Nature Notes

Nature Notes 2

Coachwhip Publications

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Books by Spoo, Al