Constellation Similarity Assertions
Maybe-Same Assertions
There are 1 possible matching Constellations.
Ballou, Donald Henry
http://n2t.net/ark:/99166/w6036mh9 (person)
Ballou earned his Harvard AM in 1931 and his PhD in 1934. From the description of The gyroscope / [by] D. H. Ballou. [1934] (Harvard University). WorldCat record id: 228511610 ...