Weed seeds
Subtitle: illustrated in colour
By: / by W. H. Wright
Contributors: Canada. Department of Agriculture
Publisher: Department of Agriculture
Published: 19uu
Place of publication: Ottawa
Language: eng
Notes: "Verbenaceae, Labiatae, Solanaceae, Scrophulariaceae, Plantaginaceae, Rubiaceae, Valerianaceae, Lobeliaceae."