The division shall consist of a bureau of research, a bureau of planning, a bureau of development, and such other bureaus as the director may establish. Each bureau may be headed by a bureau chief selected on the basis of his technical and administrative qualifications and experience to perform the duties required by his position. The chief for the bureau of research shall be a person thoroughly familiar with the principles of, and experienced in, the methods and techniques of research and economics. The chief for the bureau of planning shall be an industrial engineer experienced in that type of work. The chief for the bureau of development shall be a person thoroughly familiar with the principles of, and experienced in, the methods and techniques of developing a program of advertising and salesmanship.