Mineral Industries Conference of Illinois (3rd 1935 Urbana)

• Abstracts of papers dealing with clay and clay products, presented at the third annual Mineral Industries Conference of Illinois, May 17-18, 1935
• Abstracts of papers dealing with coal, presented at the third annual Mineral Industries Conference of Illinois, May 17-18, 1935
• Abstracts of papers dealing with rock and rock products, presented at the third annual Mineral Industries Conference of Illinois, May 17-18, 1935