To make it more accessible to non-Mexicans, the entire manuscript was pruned and the explanatory essays were placed before the interviews.

Included are explanatory essays from Science magazine editorin-chief Donald Kennedy that tie together the issues and explore therelationships among them.

The photographs are excellent, clustered with captions after an explanatory essay, or in some cases a series of short essays.

Nobody ventures explanatory essays in the catalogue this time.

Released bi-annually, each issue features a series of selected photographs related to the issue's theme with explanatory essays written by the photographers.

Apart from an explanatory essay, the book contains fifteen silver-gelatine photograph prints.

A sumptuous production with explanatory essays, this lists 538 works - 65 more than are in the 1977 edition - but includes hardly any drawings.

Many of the works may be daunting to general readers, but the author provides a helpful road map with her lucid explanatory essays and annotation.

The "Characters" page organizes them into groups and offers links to explanatory essays.

Along with explanatory essays, this resource contains interactive graphics and a glossary of terms.