Discount for regular customers! If the total of your purchases from the seller
Timur_ed
exceeds:
- $15 discount 20%
Lag1989 problem number 26.1
Determine how many nuclei in 1 mg of the radioactive isotope polonium decay within: a) one day; b) one year.
Thank you for your purchase. If you have any questions, write to the post office (see the "Seller" section)
No customer reviews yet.
Discount for regular customers! If the total of your purchases from the seller
Timur_ed
exceeds: