RT Journal Article SR Electronic T1 Synthetic Hydrophilic Colloids as Soil Amendments JF Science JO Science FD American Association for the Advancement of Science SP 17 OP 18 DO 10.1126/science.104.2688.17-a VO 104 IS 2688 A1 WADSWORTH, H. A. YR 1946 UL http://science.sciencemag.org/content/104/2688/17.2.abstract AB