@book{32439,
	author = {Kovalev, P. V. and Serbinova, E. M.},
	title = {Laboratornye zani︠a︡tii︠a︡ po osnovam pochvovedenii︠a︡ /},
	publisher = {Izd-vo Kharʹkovskogo gosuniversiteta,},
	year = {1960.},
	address = {Kharʹkov :}
}