RT @BSBDChemistry: A couple more sights on our way back to the hotel, Trafalgar Square @royalsociety #SummerScience #YRZ2022 quick change a…
RT @BSBDChemistry: A couple more sights on our way back to the hotel, Trafalgar Square @royalsociety #SummerScience #YRZ2022 quick change a…