0 of, or concerning, the system of sending letters etc -- เกี่ยวกับที่ทำการไปรษณีย์
the postal service.
The data were collected using three methods, namely semi-structured interviews, focus groups and a postal questionnaire.
A stamped addressed envelope was provided for postal return.
A postal patient satisfaction questionnaire and an economic analysis were also carried out.
Smoking rates reported from the postal questionnaire were lower than those from the medical records.
Information was collected on clinical symptoms using postal questionnaires ; at case onset and at 3 weeks.
In our study we used a postal questionnaire and telephoned respondents only if they had not replied to our initial two mailings.
If postal services were privatized, postmasters would lose their favor.
The number of offices in the national postal system peaked in 1901 at 76,945; in 1910 the number had dropped to 59,580.
