00370nam a2200109Ia 4500008004100000020001500041082002100056245009800077260005000175700001600225700001900241220204s9999    xx            000 0 und d  a1402006020  a575:631.523bMAL 0aMutations, in vitro and molecular techniques for environmentally sustainable crop improvement  aNetherlandsbKluwer Academic Publishersc2002  aKasha,  K J  aMaluszynski, M