The World Reference Base for Soil Resources
1998 ◽
pp. 21-28
◽
2018 ◽
Vol 64
(2)
◽
pp. 138-144
◽
2006 ◽
Vol 15
(3)
◽
pp. 157-166
◽
2004 ◽
Vol 50
(3)
◽
pp. 431-437
◽