00290nam a2200097Ia 4500008004100000082001600041100002000057245007300077260003400150300000800184140113s9999    xx            000 0 und d  a634.2    J7  a"Hume, Harold."  a"Citrus fruits, revised edition of the cultivation of citrus fruits"  a1957bMacMillan Co.cNew York  a444