| Recipient | Post | Date |
| pra1785 | Re: Adding necessarily more fertilizers to soil lowers its ability to abso | 19-Jul-2017 |
| Bunuel | Re: The sequence a1, a2, a3, ..., an, ... is such that i*a_i=j*aj for any | 17-Jul-2017 |
| DavidArchuleta | | 17-Jul-2017 |
| DavidArchuleta | Re: The sequence a1, a2, a3, ..., an, ... is such that i*a_i=j*aj for any | 17-Jul-2017 |
| SUPERSARS | Re: 660 and beyond! | 23-Jun-2017 |