Spencer, D. A. (1974). The National Pesticide monitoring program: An overview of the first ten years of the program’s operation. Washington: National Agricultural Chemicals Association.
Chicago ZitierstilSpencer, Donald A. The National Pesticide Monitoring Program: An Overview of the First Ten Years of the Program’s Operation. Washington: National Agricultural Chemicals Association, 1974.
MLA ZitierstilSpencer, Donald A. The National Pesticide Monitoring Program: An Overview of the First Ten Years of the Program’s Operation. Washington: National Agricultural Chemicals Association, 1974.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.