Fred C. Koch Professions : Chemical engineerBorn : September 23, 1900Died : November 17, 1967 Browse All Authors Famous Quotes by Fred C. Koch Regardless of whether you are an entrepreneur or whether you are an employee of a large company, the absolute prerequisite is that you must know your stuff. There is no substitute for this. Fred C. Koch substitutesentrepreneurstuff Similar Authors Jack Parsons chemical-engineer Peter Stilbs chemical-engineerAll Authors
