00301nam a2200097Ia 4500008004100000082001900041100003500060245006100095260003900156300000800195140113s9999    xx            000 0 und d  a547.992.3   L1  a"Sarknen, K.V. & Ludwig, C.H."  a"Lignins :Occurances, Formation sturcture and reactions"  a1971bWiley IntersceicnecNew York  a916