000
00284nam a2200109Ia 4500
008
191031s9999 xx 000 0 und d
100
_a
Proceeding of the 21th
245
0
_a
Methods of K.Research in Plants
260
_b
"Int.Potash Instt,Switzerland"
260
_c
1989
942
_c
BK
999
_c
216902
_d
216902