Cognomen Ostrach (Ostrach 
) , in the world, is a rare family name. The family name Ostrach is characteristic of Poland, where it is a rare surname, the United States, where it is an extremely rare surname, and Germany. More prevalently, Ostrach is the forename as well as the last name.
| simon ostrach American aerodynamics scientist (1923-2017), US (b. 1923) |
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| bayla ostrach researcher |
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| lillian r. ostrach planetary scientist |
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