books خط عدم استقرار
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# unstable pregnancy
# unstable marriage
# Unstable angina pectoris
# The unstable political reality
# unstable platforms
# unstable air mass
# Unstable flow in pipes
# unstable chemical elements
# unstable flow condition
# Unstable heat transfer
# unstable equilibrium
# unstable money
# unstable flow
# unstable market
# Unstable powers
# unstable mutation
# unstable weather
# unstable compound
# unstable intent
# unstable frame
