List and analytical index of publications of the Porto Rico Agricultural Experiment Station (July, 1900, to March, 1930)
By: prepared by Elizabeth H. Langdale
Contributors: Langdale, Elizabeth H.
Series: USDA Federal Experiment Station Puerto Rico Circular -- 21; Circular (Puerto Rico Agricultural Experiment Station) -- no. 21.
Publisher: Porto Rico Agricultural Experiment Station
Published: 1930
Place of publication: Mayaguez
Language: eng
Number of pages: 35
Subjects: Porto Rico Agricultural Experiment Station
Notes: Cover title.

Issued June, 1930