electrical field
type: Concept
preferred label: میدان الکتریکی @fa
related: Van method

seismology
type: Concept
preferred label: لرزه‌شناسی @fa
related: Van method

Van method
type: Concept
preferred label: روش ون @fa
related: precursor
related: earthquake prediction
related: electrical field
related: seismology

precursor
type: Concept
preferred label: پیش‌درآمد @fa
related: Van method

earthquake prediction
type: Concept
preferred label: پیش‌بینی زمین‌لرزه @fa
related: Van method