73120172
Mar 23, 1977
Nov 15, 1977
DECORATIVE HYDROPONIC PLANT SYSTEMS CONSISTING OF LIVE, ORNAMENTALPLANTS GROWING IN SOIL-LESS HYDROPONIC CONTAINERS AND SUPPORTED THEREIN WITH A CALCINED CLAY AGGREGATE MATERIAL; AND KITS THEREFOR CONSISTING OF CONTAINER, AGGREGATE MATERIAL, NUTRIENT SOLUTION AND INSTRUCTION BOOKLET
Natural Agricultural Products