Dunes and beaches of Essex County (Massachusetts)
By: by Henry Curtis Ahl
Publisher: s.n.]
Published: 1949
Place of publication: [S.l
Language: eng
Number of pages: 22
Subjects: Sand dunes; Beaches; Natural history
Notes: "Selections from a lecture on Essex County by Henry Curtis Ahl"--t.p. verso.

Addendum and "table for determining at various hights the distance one may see across a level surface such as the ocean or a plain" tipped in.