Key to the aquatic plants of northern and central Europe including Britain and Ireland /
Aquatic plants of Pennsylvania : a complete reference guide /
Plantas acuáticas tropicales : manual para su uso en la acuicultura rural /
Aquatic photosynthesis /
Urban lichens : a field guide for northeastern North America : including New York City, Chicago, Toronto, Boston, New Haven, Philadelphia, Baltimore, Washington, D.C. /
Woody plants in winter : a manual of common trees and shrubs in winter in the northeastern United States and southeastern Canada /
Wild urban plants of the Northeast : a field guide /
Seeds and fruits of plants of eastern Canada and northeastern United States /
Pandora's locks : the opening of the Great Lakes-St. Lawrence Seaway /
The Jepson manual : vascular plants of California /
Common mosses of the Northeast and Appalachians /
Plant life of Kentucky : an illustrated guide to the vascular flora /
Stemming the tide : controlling introductions of nonindigenous species by ships' ballast water /
Flowering plants of the Galápagos /
Seaweeds of the world : a guide to every order /
Plants of central Queensland : identification and uses of native and introduced species /
A manual of aquatic plants /
The last pescadores of Chimalhuacán, Mexico : an archaeological ethnography /