A Preliminary Study of the Agaves of the United States, With Some General Introductory Remarks Upon The Genus, Anna Isabel Mulford (Thesis - Ph.D., 1895), page 78
Title
A Preliminary Study of the Agaves of the United States, With Some General Introductory Remarks Upon The Genus, Anna Isabel Mulford (Thesis - Ph.D., 1895), page 78