Descriptions of types of principal American varieties of spinach /

Includes index.

Descriptions of types of principal American varieties of orange-fleshed carrots /

Prepared jointly by specialists of the United States Department of Agriculture, Cornell University, and the experiment stations of California, Louisiana, Minnesota, Texas, and Virginia.

Descriptions of types of principal American varieties of red garden beets /

Includes indexes.

Varieties of cheese : descriptions and analyses /

"December 21, 1911."

The rose manual; containing accurate descriptions of all the finest varieties of roses, properly classed in their respective families, their character and mode of culture, with directions for their propagation, and the destruction of insects /

Includes index.

The races of mankind: being a popular description of the characteristics, manners and customs of the principal varieties of the human family.

Each vol. has separate t.p.

The varieties of religious experience; a study in human nature;

"Being the Gifford lectures on natural religion delivered at Edinburgh in 1901-1902."

Summary of Fiber and Spinning Test Results for Some Varieties of Cotton Grown by Selected Cotton Improvement Groups

Continued by U.S. Agricultural Marketing Service. Agricultural Information Bulletin After 1953

The fruits and fruit trees of America; the culture, propagation, and management, in the garden and orchard, of fruit trees generally; with descriptions of all the finest varieties of fruit, native and foreign, cultivated in this country.

Mode of access: Internet.

Varieties of algebras arising from K-perfect m-cycle systems

A class of algebras forms a variety if it is characterised by a collection of identities. There is a well-known method, often called the standard construction, which gives rise to algebras from m-cycle systems. It is known that the algebras arising from {1}-perfect m-cycle systems form a variety for m is an element of {3, 5} only, and that the algebras arising from {1, 2}-perfect m-cycle systems form a variety for m is an element of {3, 5, 7} only. Here we give, for any set K of positive integers, necessary and sufficient conditions under which the algebras arising from K-perfect m-cycle systems form a variety. (c) 2006 Elsevier B.V. All rights reserved.