共 19 条
[4]
GERRITZ HW, 1935, ANAL ED IND ENG CHEM, V7, P167
[5]
GOODMAN P. J., 1959, JOUR ECOL, V47, P651, DOI 10.2307/2257297
[7]
GOODMAN PJ, 1957, THESIS U SOUTHAMPTON
[9]
HUMPHRIES EC, 1956, MODERN METHODS PLANT, V1
[10]
KNOWLES FRANK, 1929, JOUR MIN AGRIC [GREAT BRITAIN], V35, P934