Descriptive botany. A practical guide to the classification of plants, with popular flora.

Mode of access: Internet.

Class-book of botany: being outlines of the structure, physiology, and classification of plants; with a flora of the United States and Canada /

Mode of access: Internet.

Classification of alcoholism treatment settings /

Mode of access: Internet.

The science of knowledge.

Mode of access: Internet.

What is truth? an essay in the theory of knowledge,

"Published on the foundation established in memory of James Wesley Cooper of the class of 1865, Yale college."

The Book of knowledge;

Mode of access: Internet.

Report on the classification of positions and schedules of compensation, City of Minneapolis ... /

Contains tables.

Russian-English glossary and Soviet classification of ice found at sea,

Mode of access: Internet.

Hazard classification of United States military explosives and hazardous munitions.

Cover title.

Understanding Iowa soils; an introduction to the formation, distribution, and classification of Iowa soils

Includes bibliography.

A candle clock, recto, folio from Kitab fi ma`arifat al-hiyal al-handisaya (The book of knowledge of ingenious mechanical devices) Automata by al-Jazari

1 ft. 1/8 in.x 8 5/8 in.; ink, opaque watercolor and gold on paper

A musical toy in the form of a boat folio from Kitab fi ma'arifat al-hiyal al-handisaya (the book of knowledge of ingenious mechanical devices) Automata by al-Jazari

11 57/64 in.x 8 35/64 in.; ink, opaque watercolor and gold on paper

Automata by al-Jazari, The face of a water clock with Zodiac signs, folio from the Kitab fi ma'arifat al-hiyal al-handisaya (the book of knowledge of ingenious mechanical devices) Automata by al-Jazari

1 ft. 13/32 in.x 8 5/8 in.; ink, opaque watercolor and gold on paper

Two drinking men, folio from the Kitab fi ma'arifat al-hiyal al-handisaya (the book of knowledge of ingenious mechanical devices) Automata by al-Jazari

1 ft. 11/64 in.x 8 1/32 in.; ink, opaque watercolor and gold on paper

The basin of the two scribes, folio from the Kitab fi ma'arifat al-hiyal al-handisaya (the book of knowledge of ingenious mechanical devices) Automata by al-Jazari

1 ft. 1/8 in.x 7 3/4 in.; ink, opaque watercolor and gold on paper