An edition of Observations and investigations made at the Blue Hill Meteorological Observatory, Massachusetts, U.S.A., in the years 1901 and 1902, under the direction of A. Lawrence Rotch (1903)

Observations and investigations made at the Blue Hill Meteorological Observatory, Massachusetts, U.S.A., in the years 1901 and 1902, under the direction of A. Lawrence Rotch

with appendices, containing the observations with kites, 1897-1902, and a description of the kites and instruments

By Abbott Lawrence Rotch,Edward C. Pickering