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Geneva, Switzerland, WHO, EPI, 1984 Oct. 12 p. (Logistics and Cold Chain for Primary Health Care 3; EPI/LOG/84/3)This booklet considers 4 important aspects of good distribution of supplies: decide a delivery interval; decide a delivery method; choose the transport; and make a timetable. In a system that works well, supplies never run out, there is never too much of any supply, the expiration date is never passed, the cost of the distribution is as low as possible; and in the case of vaccines, they are kept cold all the time. The design of a good delivery depends on: what storage facilities exist; what transport exists; how many people can be trained in the different skills needed; what volume and weight of supplies need to be delivered; and many other factors that only can be decided locally. It is necessary to estimate the volume and the weight of the supplies required in order to make a decision about the distribution means. There are 2 ways of distributing supplies: collection and delivery. In many places, both methods are used. There are 3 types of transport that may be chosen: public, project vehicle, and hired vehicle. The type of transport is not limited to motor vehicles. Boats, trains, carts, bicycles, and walking may be used. In certain cases, it may be justified to use domestic air service. However the distribution system is planned, it is important to make a timetable so that it will operate regularly and properly. The module includes diagrams and exercises.