Acid-basic disturbances
ionosphere disturbances
Interpersonal disturbances
internal and external disturbances
intermodulation disturbances
instantaneous voltage disturbances
Initial disturbances of land surface parameters
impact of impulsive disturbances
Human-caused disturbances
Hereditary disturbances in tooth structure NEC
Geomagnetic Disturbances
fundamental disturbances
Functional vocal disturbances