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A postman collecting mail for delivery. The mail or post is a system for physically transporting postcards, letters, and parcels. [1] A postal service can be private or public, though many governments place restrictions on private systems. Since the mid-19th century, national postal systems have generally been established as a government ...
Print on demand ( POD) is a printing technology and business process in which book copies (or other documents, packaging, or materials) are not printed until the company receives an order, allowing prints in single or small quantities. While other industries established the build-to-order business model, POD could only develop after the ...
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