Rate of Soil Development of Indian Moundon Peorian Loessin Northern Illinois State.Printed in 1943,by Agronomy Department of Illinois University.

• 李连捷．美国伊利诺州印第安人墓地黄土母质土壤发育的速度．伊利诺大学农学系论 文，1943．（Li Lianjie.