00640nam a22001937a 4500 20181210083716.0 180828b xxu||||| |||| 00| 0 eng d 0719400503 BD-DhBPA BD-DhBPA 582.1504116 BAX 1981 Barnett . J. R . 142683 Xylem cell development Plant Science Laboratories ,University of Reading Barnett J. R . Tunbridge Wells : Castle House Publications Ltd., 1981 viii. 307 p; 22 cm, Shamim Plant ecology Xylem 142684 Barnett, John R. [Editor] 142685 ddc BK 50764 50764