00361nam a2200097Ia 4500008004100000082002600041100009400067245007400161260002100235300000700256140113s9999 xx 000 0 und d a577.3:575(082.2) L0 a"Japan,(Ministry of --) Agriculture & Forestry, National Institute of Radiation Breeding" aMutagenesis in Relation to ploidy level 1970-Gama Field Symposia No.9 a1970bIRBcJapan a93