The study of marketing processes, activities, institutions, and results from a broad perspective such as a nation, in which cultural, political, and social, as well as economic interaction are investigated. It is marketing in a larger context than any one firm.
Primary instrument. A primary instrument is a scientific instrument, which by its physical characteristics is accurate and is not calibrated against anything else. A primary instrument must be able to be exactly duplicated anywhere, anytime with identical results. Pressure.
Any instrument that produces sound by using air as the primary vibrating means, such as flute, whistle or horn. The most common Western instruments of this category belong to the woodwind and brass families. Bagpipes are aerophones frequently used in traditional music.