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  2. Postage stamps and postal history of India - Wikipedia

    en.wikipedia.org/wiki/Postage_stamps_and_postal...

    The volume of mail moved by the postal system increased relentlessly, doubling between 1854 and 1866, then doubling again by 1871. The Post Office Act XIV introduced reforms by 1 May 1866 to correct some of the more apparent postal system deficiencies and abuses. Postal service efficiencies also were introduced.

  3. Mail - Wikipedia

    en.wikipedia.org/wiki/Mail

    So in the U.K., the Royal Mail delivers the post, while in North America both the U.S. Postal Service and Canada Post deliver the mail. The term email, short for "electronic mail", first appeared in the 1970s. [4] [5] The term snail mail is a retronym to distinguish it from the quicker email. Various dates have been given for its first use.

  4. India Post - Wikipedia

    en.wikipedia.org/wiki/India_Post

    Since India became independent in 1947, the postal service continues to function on a nationwide basis, providing a variety of services. The structure of the organization has the directorate at its apex; below it are circle offices, regional offices, the superintendent's offices, head post offices, sub-post offices and branch offices.

  5. Postal Index Number - Wikipedia

    en.wikipedia.org/wiki/Postal_Index_Number

    An example of a Postal Index Number from Ujjain in Madhya Pradesh. 4 indicates the West postal zone, 5 indicates a postal sub-zone in Madhya Pradesh, 6 indicates the Ujjain sorting district, 0 indicates the Ujjain core area service route, 01 indicates the Ujjain Head Office as the delivery office.

  6. Postage stamps and postal history of the Indian states

    en.wikipedia.org/wiki/Postage_stamps_and_postal...

    Bundi issued 56 postal and 52 official stamps until it became part of the new state of Rajasthan in 1948. [17] Along with Jaipur and Kishangarh, Bundi continued to run its own postal service within Rajasthan until 1 April 1950. In 1949, there was a further issue of seven Bundi stamps, carrying a Rajasthan handstamp (see also Rajasthan below).

  7. Survey sampling - Wikipedia

    en.wikipedia.org/wiki/Survey_sampling

    Bias in surveys is undesirable, but often unavoidable. The major types of bias that may occur in the sampling process are: Non-response bias: When individuals or households selected in the survey sample cannot or will not complete the survey there is the potential for bias to result from this non-response. Nonresponse bias occurs when the ...

  8. Survey data collection - Wikipedia

    en.wikipedia.org/wiki/Survey_data_collection

    Mobile data collection or mobile surveys is an increasingly popular method of data collection. Over 50% of surveys today are opened on mobile devices. [6] The survey, form, app or collection tool is on a mobile device such as a smart phone or a tablet.

  9. Azad Hind stamps - Wikipedia

    en.wikipedia.org/wiki/Azad_Hind_Stamps

    The "Provisional Government of Free India" was founded by Subhas Chandra Bose as a government in exile with the support of Japan during the Second World War.For this government, stamps were planned, which were manufactured in Nazi Germany.