I have a three-way unbalanced ANOVA that I need to calculate (fixed effects
plus interactions, no random effects). But word has it that aov() is good
only for balanced designs. I have seen a number of different recommendations
for working with unbalanced designs, but they seem to differ widely (car,
nlme, lme4, etc.). So I would like to know what is the best or most usual
way to go about working with unbalanced designs and extracting a reliable
ANOVA table from them in R?

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