TY - BOOK ID - 132731607 TI - Mapping of technology: a first exploration of knowledge diffusion amongst fields of technology AU - Engelsman, E.C. AU - van Raan, A.F.J. PY - 1991 PB - Den Haag DB - UniCat KW - Engineering sciences. Technology UR - https://www.unicat.be/uniCat?func=search&query=sysid:132731607 AB - ER -