THE GERMAN STATE MINISTRY FOR CHECH AND MORAV, PRAGUE (1906) 1939 - 1945 (1965), inv. 94, sig. 110-3/34

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English Translation

Appendix 5 to the 13th extension command Höh.Pi.Kdr.z.b.V.XI Ia Nr. 1697/45geh.v.3.4.1945 Quick lockBable wooden barrier by roller and roller-bock round iron 30mm gas tube ca 36mm round wood 15-20cm roll Close the barrier rolls Wood-saving construction by TEIIE Use of stone or masonry min.2,50 4.50 or 6,00 min.3,00 w ratios +0.75+1,0 enemy min.2,00 according to proposal's Pi.S.St.2 Tbm 1.4.45