W. Petruk's Documents

W. Petruk's Documents

Applied mineralogy in the mining industry

Applied mineralogy in the mining industry
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The Roman Law of Slavery: The Condition of the Slave in Private Law from Augustus to Justinian

The Roman Law of Slavery: The Condition of the Slave in Private Law from Augustus to Justinian
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Further Measurements of Stellar Temperatures and Planetary Radiation

Further Measurements of Stellar Temperatures and Planetary Radiation
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Sam's Ghost

Sam's Ghost
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Politics and the Stages of Growth

Politics and the Stages of Growth
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On the K Series of X-Rays (1920)(en)(10s)

On the K Series of X-Rays (1920)(en)(10s)
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Perry Rhodan, der Erbe des Universums. Nr. 9. Hilfe für die Erde

Perry Rhodan, der Erbe des Universums. Nr. 9. Hilfe für die Erde
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The Great Population Spike and After: Reflections on the 21st Century

The Great Population Spike and After: Reflections on the 21st Century
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An introduction to string figures

An introduction to string figures
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Die Zeitpatrouille

Die Zeitpatrouille
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Heat From Texas

Heat From Texas
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Captains All and Others

Captains All and Others
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w_w_jacobs_-_the_monkey's_paw

w_w_jacobs_-_the_monkey's_paw
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The Monkey's Paw

The Monkey's Paw
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On the Radial Velocities of Nebulae

On the Radial Velocities of Nebulae
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Shareholders

Shareholders
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De Keizer Van New-York

De Keizer Van New-York
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What Is Calculus About?

What Is Calculus About?
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Robot Threat- New York

Robot Threat- New York
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What Is Calculus About-

What Is Calculus About-
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De keizer van New-York

De keizer van New-York
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Hilfe für die Erde

Hilfe für die Erde
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Politics and the Stages of Growth

Politics and the Stages of Growth
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Der Prokaskische Krieg Band 2 von 3

Der Prokaskische Krieg Band 2 von 3
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Geheim contact X

Geheim contact X
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Geheimschaltung X

Geheimschaltung X
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Perry Rhodan, der Erbe des Universums. Nr. 6. Das Mutanten-Korps

Perry Rhodan, der Erbe des Universums. Nr. 6. Das Mutanten-Korps
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Mathematician's Delight (Penguin mathematics)

Mathematician's Delight (Penguin mathematics)
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Mathematical Recreations and Essays

Mathematical Recreations and Essays
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