'If your dentist likes you, he may give you this gas discovered by Joseph Priestley in 1772'
nitrous oxide (laughing gas)
SUCH GOOD CHEMISTRY: If your dentist likes you, he may give you this gas discovered by Joseph Priestley in 1772
If your dentist likes you, he may give you this gas discovered by Joseph Priestley in 1772
If your dentist likes you, he may give you this gas discovered by Joseph Priestley in 1772
SUCH GOOD CHEMISTRY
nitrous oxide laughing gas
SUCH GOOD CHEMISTRY