Here you'll find a variety of crocodilian publications for sale, ranging from current books to fairly old publications and reprints. Other herpetological titles are also available. Zoo Book Sales. A highly recommended site for finding both new and used books on crocodiles, alligators and caimans. Books on other species are also available. articles & features:
Laying the First Course. 1  Start at the edge of the wall thatâs most visible, or the edge that butts up against another structure. If your wall goes across a slope, start at the lowest end. 2  Position the first stone in your trench. Make sure the stone is level from front to back and side to side.
For just $5 extra per square foot, you can have an interlocking block or poured concrete retaining wall. These designs pair well with homes and businesses with a modern sensibility. Natural stone. For about $25 per square foot, you can build a natural stone retaining wall.ypically, timber walls are the least expensive retaining wall design; they often run about $15 per square foot. However, you should keep in mind that timber walls may not last as long as other retaining wall options, since moisture in the soil can weaken the timber.