Noile mortare POROTHERM TM si POROTHERM M50 de la Wienerberger
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TM 9-458 12-inch Seacoast Matériel: 12-inch Mortar M1912 Mounted On 12-inch Mortar Carriage M1896MIII, 1942: Description Of Mortar, Description Of Carriage, Operation, Malfunction And Correction : War Department, United States: Amazon.es: Libros