与词条（邮票） #S19016, #S19017, #S19018, #S19019, #S19020, #S19021, #S19022, #S19023, #S19024, #S19025, #S19026, #S19027, #S19028, #S19029, #S19030, #S19031, #S19032, #S19033, #S19034, #S19035, #S19036, 相关的邮政史