- US. Heybroek, H. M., Goudzwaard, L, Kaljee, H. (2009). Iep of olm,
karakterboom van de Lage
Landen (:Elm, a tree with
character of the Low Countries)...
- de/handbuch/ulmus Heybroek, H. M., Goudzwaard, L, Kaljee, H. (2009). Iep of olm,
karakterboom van de Lage
Landen (:Elm, a tree with
character of the Low Countries)...
- ISSN 0083-7792. Heybroek, H. M., Goudzwaard, L, Kaljee, H. (2009). Iep of olm,
karakterboom van de Lage
Landen (:Elm, a tree with
character of the Low Countries)...
- S2CID 34278784. Heybroek, H. M.; Goudzwaard, L.; Kaljee, H. (2009). Iep of olm,
karakterboom van de Lage
Landen (Elm, A Tree With
Character of the Low
Countries (in...
- 2011. Heybroek, H. M., Goudzwaard, L, Kaljee, H. (2009). Iep of olm,
karakterboom van de Lage
Landen (:Elm, a tree with
character of the Low Countries)...
- vplants.org Heybroek, H. M., Goudzwaard, L, Kaljee, H. (2009). Iep of olm,
karakterboom van de Lage
Landen (:Elm, a tree with
character of the Low Countries)...
- character. Heybroek, H. M., Goudzwaard, L, Kaljee, H. (2009). Iep of olm,
karakterboom van de Lage
Landen (:Elm, a tree with
character of the Low Countries)...
- S2CID 7520439. Heybroek, H. M., Goudzwaard, L, Kaljee, H. (2009). Iep of olm,
karakterboom van de Lage
Landen (:Elm, a tree with
character of the Low Countries)...
- 2017. Heybroek, H. M., Goudzwaard, L, Kaljee, H. (2009). Iep of olm,
karakterboom van de Lage
Landen (:Elm, a tree with
character of the Low Countries)...
- 1991. Heybroek, H. M., Goudzwaard, L, Kaljee, H. (2009). Iep of olm,
karakterboom van de Lage
Landen (:Elm, a tree with
character of the Low Countries)...