Cerca
Scopri nuove persone e i loro amici a quattro zampe, e fai nuove amicizie
organic compound in which halogen atoms have been substituted for hydrogen atoms in an alkane
perennial or biennial herb cultivated for its delicate usually blue flowers
perennial or biennial herb cultivated for its delicate usually blue flowers
a series of non-aromatic saturated hydrocarbons with the general formula CnH(2n+2)
a series of non-aromatic saturated hydrocarbons with the general formula CnH(2n+2)