TY - GEN TY - GEN T1 - Data, instruments and theory : a dialectical approach to understanding science A1 - Ackermann, Robert John LA - eng PP - Princeton PB - Princeton University Press YR - 1985 UL - https://kansalliskirjasto.finna.fi/Record/fikka.24131 SN - 0-691-07296-5 sidottu ER -