Tropical American plants, IX / Louis O. Williams.

v.31:no.18(1968)

Austral Hepaticae IX : Anastrophyllum tristanianum, a new species from Tristan da Cunha / John J. Engel.

v.38:no.7(1977)

Studies on Spiroboloid millipeds. IX. a second Typhlobolellid genus from Mexico / [by] Richard L. Hoffman.

v.62:no.3(1973)