Report discussing earthquake activity in the United States during 1931. The report is broken down by regions and has sections for specific earthquakes.

Report discussing earthquake activity in the United States during 1929. The report is broken down by regions and has sections for specific earthquakes.

Volume provides abstracts of agricultural experiments conducted during the year. Also includes statistics, convention reports, bulletins, and bibliographies. Name and subject indexes start on page 1113.

Volume provides abstracts of agricultural experiments conducted during the year. Also includes statistics, convention reports, bulletins, and bibliographies. Name and subject indexes start on page 1141.

Volume provides abstracts of agricultural experiments conducted during the year. Also includes statistics, convention reports, bulletins, and bibliographies. Name and subject indexes start on page 1141.

A topical, alphabetically arranged index to volumes 13-25 including experiment station records, publications reviewed, and foreign publications. In has a 'Consolidated Table of Contents' which lists all editorial notes and publications of the experiment stations and Department of Agriculture from the referenced volumes