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erreur d'observation
IMF.	Störterm m
math.	Beobachtungsfehler m
meas.inst.	Ablesefehler m
stat., scient.	Erhebungsfehler m
erreur d’observation
chem.	Versuchsfehler m
erreurs d'observation
gen.	Beobachtungsfehler m

erreur d'observation: 4 phrases in 2 subjects

Astronomy	2
Statistics	2