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Survey of colonial nesting birds and lakeshore habitats in northeast Alberta
[Colonial Gardens gladiolus trade circular and price list]
W.L. Humphreys--Colonial Farms, Coatesville, Pa Bulletin I, 1933
Fall list, 1940
The cream of the world's gladiolus varieties offered at prepaid prices
Colonial landscaping : 1953
Colonial Gardens gladioli
Journal of the Adelaide Botanic Gardens
Seven New Species of Heliotropium (Boraginaceae) from the Monsoon and Arid Zones of Australia