Das Harz der Nadelhölzer, seine Entstehung, Vertheilung, Bedeutung und Gewinnung. Für Forstmänner, Botaniker und Techniker

Das Harz der Nadelhölzer, seine Entstehung, Vertheilung, Bedeutung und Gewinnung. Für Forstmänner, Botaniker und Techniker

105 Pages · 1894 · 16.17 MB · German
by Dr. Heinrich Mayr (auth.) & Dr. Heinrich Mayr (eds.)
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“ If you are irritated by every rub, how will your mirror be polished? ” ― Rumi
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