Johnson, W. H. Central heating : questions and answers, by W.H. Johnson - London Newnes Technical Books c1980[reprinted 1983] - 122p.; ill. 22cm.- - Questions and answers . ISBN: 0408004592 Subjects--Topical Terms: HEATING FROM CENTRAL STATIONSCENTRAL HEATING SYSTEMS Dewey Class. No.: / 697.03076 JOH