| Canadian Subject Headings | DDC 22 Numbers |
| Campbell River (Comox-Strathcona, B.C. : River) | T2--7112 |
| Campbell River Estuary (Comox-Strathcona, B.C.) | T2--7112 |
| Cape Spear National Historic Site (N.L.) | T2--7181, 387.155097181 |
| Deltas—Canada | 551.4560971 |
| Estuaries—Canada | 551.46180971 |
| Etchemin River (Québec) | T2--71459 |
| Etchemin River Region (Québec) | T2--71459 |
| Etchemin River Watershed (Québec) | T2--71459 |
| Fortification—United States | 623.1973 |
| Gaspé Peninsula (Québec) | T2--71477 |
| George Island (Halifax, N.S.) | T2--71622 |
| Georges Island National Historic Site (Halifax, N.S.) | T2--716225 |
| Inuit women artists—Canada | 704.0420899712 |
| Locke Street (Hamilton, Ont.) | T2--71352 |
| Mackenzie River (N.W.T.) | T2--7193 |
| Mackenzie River Delta (N.W.T. and Yukon) | T2--7193 |
| Mackenzie River Valley (N.W.T.) | T2--7193 |
| Mackenzie River Watershed (N.W.T.) | T2--7193 |
| Magog, Lake (Québec) | T2--71466 |
| Magog, Lake, Region (Québec) | T2--71466 |
| Melanson Settlement National Historic Site (N.S.) | 971.63301 |
| Northwest Territories—Economic conditions—20th century | 330.9719203 |
| Northwest Territories—Social conditions—20th century | 971.9203 |
| Northwest Territories—Social conditions—21st century | 971.9204 |
| Ontario—Social conditions—To 1867 | 971.301, 971.302 |
| Ontario—Social conditions—19th century | 971.302 |
| Ontario—Social conditions—1867-1918 | 971.303 |
| Ontario—Social conditions—1867- | 971.303 |
| Ontario—Social conditions—20th century | 971.304 |
| Ontario—Social conditions—1945-1991 | 971.304 |
| Ontario—Social conditions—1991- | 971.304, 971.305 |
| Ontario—Social conditions—21st century | 971.305 |
| Ottawa River Watershed (Québec and Ont.) | T2--7138 |
| Prairie Provinces—Social conditions—To 1905 | 971.201, 971.202 |
| Prairie Provinces—Social conditions—1905-1945 | 971.202, 971.203 |
| Prairie Provinces—Social conditions—1905- | 971.202, 971.203 |
| Prairie Provinces—Social conditions—1945-1991 | 971.203 |
| Prairie Provinces—Social conditions—1991- | 971.203, 971.204 |
| Québec (Province)—Social conditions—19th century | 971.402 |
| Québec (Province)—Social conditions—To 1867 | 971.401, 971.402 |
| Québec (Province)—Social conditions—1867-1918 | 971.403 |
| Québec (Province)—Social conditions—1867- | 971.403 |
| Québec (Province)—Social conditions—20th century | 971.404 |
| Québec (Province)—Social conditions—1918-1945 | 971.403 |
| Québec (Province)—Social conditions—1945-1960 | 971.404 |
| Québec (Province)—Social conditions—1960-1991 | 971.404 |
| Québec (Province)—Social conditions—1991- | 971.404, 971.405 |
| Québec (Province)—Social conditions—21st century | 971.405 |
| Red Bay National Historic Site (Red Bay, N.L.) | T2--7182, 338.37295097182 |
| Saskatchewan—Social conditions—To 1905 | 971.2401, 971.2402 |
| Saskatchewan—Social conditions—20th century | 971.2403 |
| Saskatchewan—Social conditions—1905-1945 | 971.2402, 971.2403 |
| Saskatchewan—Social conditions—1905- | 971.2402, 971.2403 |
| Saskatchewan—Social conditions—1945-1991 | 971.2403 |
| Saskatchewan—Social conditions—1991- | 971.2403, 971.2404 |
| Saskatchewan—Social conditions—21st century | 971.2404 |