A bibliographic enumeration of Bornean plants - Merrill, Elmer D. (Elmer Drew), 1876 -1956 (Printed by Fraser & Neave, ltd, 1921)

A bibliographic enumeration of Bornean plants - Merrill, Elmer D. (Elmer Drew), 1876 -1956 (Printed by Fraser & Neave, ltd, 1921)

Botanical publications of E.D. Merrill - Merrill, Elmer D. (Elmer Drew), 1876 -1956 (1899)

An enumeration of Philippine flowering plants - Merrill, Elmer D. (Elmer Drew), 1876 -1956 (Bureau of Printing, 1922)

Just's Botanischer Jahresbericht - Just, Johann Leopold, 1841 -1891 (Gebruder Borntraeger, 1908)

The Philippine journal of science - Philippines. National Science Development Board. (Bureau of Science, 1908)

The Philippine journal of science - Philippines. National Science Development Board. (Bureau of Science, 1908)