U–Pb dating, Hf-isotope characteristics and trace-REE-patterns of zircons from Medet porphyry copper deposit, Bulgaria: implications for timing, duration and sources of ore-bearing... von Peytcheva, Irena, von Quadt, Albrecht, Neubauer, Franz, Frank, Martin, Nedialkov, Rossen, Heinrich, Christoph, Strashimirov, Strashimir

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Porphyry-copper mineralisation in the central Srednogorie zone, Bulgaria von Strashimirov, Strashimir, Petrunov, Rumen, Kanazirski, Milko

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An ultrasonic probe for the extraction of microscopic quantities of minerals for X-ray work von Kovachev, Vesèlin, Strashimirov, Strashimir

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RECHARGING DEVICE von KOLEV,KOLO N, STRASHIMIROV,STRASHIMIR L, GERGOV,GERGO I, IVANOV,KHARALAMPI E, SIMEONOV,LCHEZAR V

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METHOD AND APPARATUS FOR TAKING LOCAL DUST SAMPLES FOR RADIOSTRUCTURAL ANALYSIS von STRASHIMIROV,STRASHIMIR B, KOVACZEV,VESELIN V

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HYDRAULIC CONTROLLABLE SPEED DAMPER FOR PIT CARS FREELY MOVING ON INCLINED RAIL TRACK von STRASHIMIROV,STRASHIMIR L, CHADZIDIMOV,GEORGI I, IVANOV,CHARALAMPI E, BLGAROV,PAVEL A, KONSTANTINOV,GEORGI T, IVANOV,VENELIN N, STOILOV,CHRISTO M, LOZANOV,MLADEN G

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