1937, N. S. Popova, translated by Mihailov and D. I. Efimov, Arifmetiikan oppikirja alkușkouluja vart (kolmas osa), Leningrad: Ucebno-Pedagogiceskoi Izdateljstva, page 7:
Toiset pittuusyksiköt ovat siottu metranka sil viisii:
The other units of length are related to the metre as follows:
1) obsolete *) the accusative corresponds with either the genitive (sg) or nominative (pl) **) the comitative is formed by adding the suffix -ka? or -kä? to the genitive.