How much does a telephone directory weigh (e.g.thomson local)?

in kilogrammes would be most helpful. thanksHow much does a telephone directory weigh (e.g.thomson local)?
I've just weighed the Romford and Barking area Thomson Local at 313gms.



It's a very open question. Yell.com Business Pages for London weighs 792gms!
On my kitchen scales the latest Thomson Local weighs 130 grams (0.13 Kilograms).

Hope that helps you with your research, Bob.How much does a telephone directory weigh (e.g.thomson local)?
which year its getting lighterHow much does a telephone directory weigh (e.g.thomson local)?
My guess is 3-4 kg.