sentences:  The attempt to discern the chronology and development of Russia's building begins in earnest with Ivan Snegirev and A.A. Martynov's "Russkaya starina v pamyatnikakh tserkovnago i grazhanskago zodchestva" (Moscow, 1851).The state took an interest in the endeavour by sponsoring a series of folios published as "Drevnosti rossiiskago gosudavstva" (Moscow 1849–1853, 6 vol.