TY - GEN digital ID - 139415875 TI - Chimney sweeping by machinery PY - 1849 PB - Derby W. Hobson, [ DB - UniCat KW - Chimney cleaning industry -- Great Britain KW - Chimneys -- Cleaning UR - https://www.unicat.be/uniCat?func=search&query=sysid:139415875 AB - ER -