Where are the data "sales" and "production"

Dear R-users,

I just can't find the data set "sales" and "production" used
in the documentation: "An Introduction to R".

"sales" first appears on page 59 in

fm <- glm(y ~ x1 + x2, family = gaussian, data = sales)

"production" first appears on page 55 in
fm2 <- lm(y ~ x1 + x2, data = production)

Best regards,

C. Joseph Lu
Department of Statistics
National Cheng-Kung University
Tainan, Taiwan
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