ធនធាន ដាក់ស្លាក: Canada
5 items found (Showing 1 - 5)
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01 មករា 1976 This book includes a record of the astonishingly rich and diverse flora of cultived plants of the United States, Canada, Hawaii, and Puerto Rico.
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This is a field guide to the identification of 594 of some 865 species of trees native to North America north of Mexico. Included are the most common and most important species and also many that are less familiar but no less interesting. To make the book most useful in the field, the text, range...
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This monograph is intended to set forth the principles and the best practices currently known of dryland agriculture in North America. It represents a distillation of the knowledge of the leading authorities in the field from the federal governments, universities, and private industry....
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01 មករា 1990 This report examines seed potato systems in developed countries using the case-studies of three important seed potato-producing countries; the Netherlands, Canada and Great Britain. It compares different systems with an emphasis on the nature of the institutional structure. Seed potato production...
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01 មករា 1982 Ground covers are the easiest, least expensive, and most beautiful way to fill alarge areas of your garden. They take less maintenance than any other type of planting, but can be beautiful and unusual. Learn to select and care for ground covers best suited to your areas.