For citations:
Evdokimenkova Yu.B., Soboleva N.O. The evolution of secondary information sources in chemistry. Scientific and Technical Libraries. 2021;(4):125-140. (In Russ.) https://doi.org/10.33186/1027-3689-2021-4-125-140
Evdokimenkova Yu.B., Soboleva N.O. The evolution of secondary information sources in chemistry. Scientific and Technical Libraries. 2021;(4):125-140. (In Russ.) https://doi.org/10.33186/1027-3689-2021-4-125-140