Visual Soil EvaluationBruce C. Ball, Lars J. Munkholm, Tom Batey, Joanna Cloy, Dick Godwin · First published 2015Open the Tome
Future ImperfectCrowder, Nathan, Li, Shelly, Adams, Matt, McBrayer, Sasha Janel, Cowens, Matt, Golden, Bruce, Ball, K. C., Warren, Fred, Zimmerman, Jeremy, Meyer, Kel · First published 2012Open the Tome
