Abridged check-list of North American birds.

Includes indexes.

Food and economic relations of North American grebes /

"Contribution from Bureau of Biological Survey."

The North American Ayrshire register; wherein every animal is traced to importation.

Mode of access: Internet.

Revised check list of the North American Noctuidae.

At head of title: North American Lepidoptera.

North American Indian musical styles /

Mode of access: Internet.

A classification of North American Agallian leaf hoppers.

Mode of access: Internet.

North American and European fruit and tree germplasm resources inventory /

"Issued June 1981"--P. iv.

Who's who among North American authors ...

Editor: v. 2- 1925/26- A. Lawrence.

North American climatic data catalog.

Includes index.

Life histories of North American gulls and terns: order Longipennes.

Mode of access: Internet.

The North American bees of the genus Osmia (Hymenoptera: Apoidea) /

Descriptive letterpress on versos of plates.

The North American student.

Mode of access: Internet.

United States, from the discovery of the North American Continent to the present time /

Index: v. 9, p. 323-410.

The North American magazine.

Title from caption.

Keys to the North American genera and higher groups of aquatic insects in their larval and adult stages,

Leaves variously numbered.