"WardsSci000892"

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Increment Borers

Used to Examine Wood Quality and Measure Growth Rates

Teach Students to Quickly Determine Tree Heights

Determine the Diameter of Trunks by Measuring their Circumference

Explore dendrochronology.

The classic key to identifying trees by their leaves and needles.

Real leaves for comparison.

This exceptional guide to North American insects is a benchmark against which all other guides are measured.

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