Research and development, also known as R&D, is an interesting concept. In the creation of innovations or new knowledge. In the House, we will research the study is known as "The Borg Model", developed by Borg & Gall (1971), find that it is difficult to read the original (but future claims.) Another model is "The Model Hood." developed by the Hood in 1973 (this one is also enough to find the original reading.
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