1992 census of manufactures.

Mode of access: Internet.

1987 census of manufactures.

Mode of access: Internet.

Hardware building materials, farm and garden curriculum guide /

Developed under contractual agreements RD3-A9-240 and R-33-X-0442-240 between the Illinois State Board of Education, Dept. of Adult, Vocational and Technical Education, Research and Development Section and the Dept. of Vocational Education Studies, Southern Illinois University, Carbondale.