By International Bulb Society.
, -Título BPH: Herbertia -Existencias: 1934-1939 vol. 1-6; 1940-1949 vol. 7-16 + Plant Life vol. 5; 1950-1959 vol. 17-26 + Plant Life vol. 6-8; 1984-1986 vol.40-42; 1987-1989 vol. 43-45, no. 1-2; 1990-1993 vol. 46-49, no. 1-2; 1994-1998 vol. 50-53; 1999 vol. 54 está agotado; 2000-2009 vol. 55-63- 23 x 15 cm.

Place hold on Herbertia : Journal of the International Bulb Society

By International Bulb Society.
, -Existencias: 2003 v. 5, no. 2; 2004 v. 6, no. 1; 2005 v. 7, no. 1

Place hold on Bulbs : Bulletin of the International Bulb Society