Postal services. Quality of service. Measurement of the transit time of end-to-end services for single piece non-priority mail and second class mail— 14 стр.
Postal services. Quality of service. Measurement of the transit time of end-to-end services for single piece priority mail and first class mail— 64 стр.
Postal services. Quality of service. Measurement of the transit time of end-to-end services for single piece non-priority mail and second class mail— 20 стр.
