Thirty important forest trees of Maryland. How to know them. F. S. Besley, state forester. - [Baltimore, Md.] 1922. - 34 p., 1 l. illus. 23 1/2 x 13 cm. In cooperation with the Forest service, U.S. Department of agriculture. LCCN: agr23000341 Subjects--Topical Terms: Trees--Maryland. LC Class. No.: QK484.M3 / A5 1922 National Agricultural Library Call No.: 99.3M36