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- Experiment Station Record, Volume 56, January-June, 1927
- Volume provides abstracts of agricultural experiments conducted during the year. Also includes statistics, convention reports, bulletins, bibliographies and listings for Spanish edition publications from the Porto Rico Station. Name and subject indexes start on page 901.
- General Index to Experiment Station Record, Volumes 51 to 60, 1924-1929
- A topical, alphabetically arranged index to volumes 51-60 including experiment station records, publications reviewed, and foreign publications. In has a list of all editorial notes from the referenced volumes.