Volunteer Lake Monitoring Program report for ... County, Illinois.

Includes 87 or more reports on individual lakes in Illinois; some will be updated periodically.

Details of Gothic architecture.

Some plates are photo-lithos.

Field identification cards /

A set of individual identification cards for rare and sensitive plant species found in the southeastern United States including Puerto Rico. Categories include forbs, shrubs, ferns, and trees. Each card has a color picture on one side and a description and map on the reverse. The description includes: family, flowering date, habitat, and identifying characteristics.

Micrographia, or, Some physiological descriptions of minute bodies made by magnifying glasses : with observations and inquiries thereupon /

Errata, p. [10] at end.