Contains Feb./Mar. 1986- the separately published serial: Municipal and industrial water and pollution control
From 1985-1986, published a supplement called: Chemical buyers guide; the 1987 guide was absorbed into the Nov. 1986 issue of Process industries Canada and had the added title: Chemical buyers' guide and bulk handling directory; guides from 1988- issued in the Nov. issue of the previous year and have added title: Chemical buyers guide (e.g. 1988 guide appears in the Nov. 1987 issue)