Von martens hi-res stock... www.alamy.com

Amazon.com: Karl Martens -... www.amazon.com

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Georg Friedrich von Martens... en.wikipedia.org

Von martens hi-res stock... www.alamy.com

Von martens hi-res stock... www.alamy.com

Von martens hi-res stock... www.alamy.com

Amazon.com: Karl Martens -... www.amazon.com

Von martens hi-res stock... www.alamy.com

Amazon.com: Karl Martens -... www.amazon.com

Carl Schmitt - Wikipedia en.wikipedia.org

Cover-aow-operation-border.... www.armyupress.army.mil

Christoph Martin Wieland -... en.wikipedia.org

SD|Auctions - Northern... www.yumpu.com

Bibliography in: A... brill.com

PDF) A Bibliography... www.academia.edu

1856 1867 hi-res stock... www.alamy.com

The Austrian Comic... www.mhra.org.uk

Introduction in: The Catena... brill.com