When Radishchev thought of "Journey"?

Testes, VPWhen Radishchev thought of "Journey"?( "Extract travel *** *** AND *** T" in 1772 and "Journey from St. Petersburg to Moscow" in 1790).- Moscow: Publishing House.LEBukhgeim, 1916 -46 with .. -Bibliography.in footnotes.Note .. - Copy .: a Manuscript.litter..I. Radischev.1.Russian (collection).electronic copy Source: PBThe storage location of the original: NB MSU