Ryan Navion -  The Navion is a United States single-engine unpressurized retractable gear four-seat aircraft originally designed and built by North American Aviation in the 1940s. It was later built by Ryan Aeronautical Company and the Tubular Steel Corporation (TUSCO). Given a choice of categories company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, the text refers to which one?
Mean Of Transportation

FM Erie-built -  The Erie-built was the first streamlined cab-equipped dual service diesel locomotive built by Fairbanks-Morse introduced as direct competition to such models as the ALCO PA and EMD E-unit. Given a choice of categories company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, the text refers to which one?
Mean Of Transportation

Grinnell Mechanical Products -  Grinnell Mechanical Products a brand of Tyco International Ltd. manufactures grooved piping and mechanical products. Grinnell Mechanical Products specializes in mechanical fire HVAC commercial mining institutional and industrial applications. Grinnell grooved products are used in various industries because they are historically more efficient than flanged welded and threaded pipe joining methods. Given a choice of categories company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, the text refers to which one?
Company

International Journal of Number Theory -  The International Journal of Number Theory was established in 2005 and is published by World Scientific. It covers number theory encompassing areas such as analytic number theory diophantine equations and modular forms. Given a choice of categories company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, the text refers to which one?
Written Work