. . . . . . . . . . . . . . "American standard for nursery stock : approved February 1, 1973, American National Standards Institute, inc"@en . . . . . . . . "American standard for nursery stock : abstract"@en . . . . . "The standards establish common techniques for (a) measuring plants, (b) specifying and stating the size of plants, (c) determining the proper relationship between height and caliper, or height and width, and (d) determining whether a root ball or container is large enough for a particular size plant."@en . "American standard for nursery stock"@en . . . . . . . . . . . . "Nursery stock Standards." . . "United States." . . "Nursery stock." . . "American National Standards Institute." . . "Nursery stock United States." . . "American Association of Nurserymen." . . "Nursery stock Standards United States." . . . .