вклад в(E.g. Hindu and Buddhist contributions to science in medieval Islam have been numerous, affecting such varied areas as medicine, astronomy and mathematics wikipedia.orgLena Nolte)
доля в(Доля в доходах от = contribution to income from. IT systems and revs and benefits contribution to income from adults and housing service users. | Although it is in the UK growth & income sector, I like the 20% contribution to income from overseas holdings. Alexander Demidov)
