Soldiers of the GDR's National People's Army (NVA) wear protective suits and gas masks as they lie in a row during a military exercise simulating a chemical attack, place unknown, undated from
PDBeChem: Ligand Dictionary (PDB Ligand Chemistry - chemical component dictionary)
L-Norvaline (α-L-Aminopentanoic Acid, L-Nva, NSC 203786, CAS Number: 6600-40-4) | Cayman Chemical
NVA Announces $10 Million Donation to Fund Clinical Trials and Pioneering Breakthroughs in Specialty and Emergency Medicine | Business Wire
VINTAGE US ARMY GAS MASK Canvas Bag CHEMICAL BIOLOGICAL | eBay