STUB BEAM AND SPRING-TOOTH SHANK (21 ATTACHMENT ON 2510, 2520, 3010, 3020, 4010, AND 4020 TRACTORS) (SERIAL NO. -936) [C01] 0 Non Sectionalized Catalog A20 Beet, Bean and Vegetable Row-Crop Cultivator PC1147 in CULTIVATOR, BEET-BEAN-VEGETABLE A20