1.
Annals of the Astronomical Observatory of Harvard College V43 : Observations and Investigati...
by H. Helm Clayton, Rotch, A. ...
ISBN: 9781169749498
List Price: $34.36
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Annals of the Astronomical Observatory of Harvard College V43 : Observations and Investigati...
by H. Helm Clayton, H. Helm Cl...
ISBN: 9781165310784
List Price: $22.36
3.
Annals Of The Astronomical Observatory Of Harvard College V43
by H. Helm Clayton, Rotch, A. ...
ISBN: 9781104021047
List Price: $27.95
7.
Observations Made at the Blue Hill Meteorological Observatory, Massachusetts, U.S.A.
by H. Helm Clayton
ISBN: 9781231042359
List Price: $17.97
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Observations Made At The Blue Hill Meteorological Observatory, Massachusetts, U.s.a....
by H. Helm Clayton
ISBN: 9781271724994
List Price: $28.75
9.
World Weather Records, 1931-1940 : Continued from Volumes 79 and 90; Prepared in Cooperation...
by Clayton, H. Helm
ISBN: 9781333826574
List Price: $19.97
10.
Annals of the Astronomical Observatory of Harvard College V43 : Observations and Investigati...
by H. Helm Clayton, Helm Clayt...
ISBN: 9781161864175
List Price: $42.95
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World Weather Records, 1931-1940 : Continued from Volumes 79 and 90; Prepared in Cooperation...
by Clayton, H. Helm
ISBN: 9780266649410
List Price: $37.59