73119356
Mar 17, 1977
Jul 18, 1978
CHEMICAL PRODUCTS USED IN INDUSTRY; CHEMICAL PRODUCTS USED IN SCIENCE AND PHOTOGRAPHY; CHEMICAL PRODUCTS USED IN AGRICULTURE; ARTIFICAL AND SYNTHETIC RESINS; PLASTICS IN THE FORM OF POWDERS, LIQUIDS OR PASTES FOR INDUSTRIAL USE; TANNING SUBSTANCES; ADHESIVE SUBSTANCES USED IN INDUSTRY
Chemicals