The solar propagating frame for rooting citrus and other subtropical plants
By: Walter T. Swingle, T. Ralph Robinson, and E. May, Jr
Contributors: Robinson, T. Ralph; May, Eugene
Edition: Rev. ed.
Series: Department circular / United States Department of Agriculture -- 310; Department circular (United States. Dept. of Agriculture) -- 310.
Publisher: U.S. Dept. of Agriculture
Published: 1926
Place of publication: Washington, D.C
Language: eng
Number of pages: 14
Subjects: Citrus fruits; Propagation
Notes: Caption title.

"May 1926."

Includes bibliographical references.