Livres de John J. Engel

A handbook for travellers in Holland and Belgium [by J. Murray]. 19th-21st ed

Les relations des pays d'Islam avec le monde latin

Notes on the Genus Hygrolembidium (Hepaticae) [by] John J. Engel

New Nanotechnology Research

Austral Hepaticae

Austral Hepaticae

Restoring Primary Care

Seaway is Defended

Austral Hepaticae

Plagiochila Bazzanioides Engel & Merrill, a Remarkable New Species of Plagiochilaceae from New Zealand

A Taxonomic and Phytogeographic Study of Brunswick Peninsula (Strait of Magellan) Hepaticae and Anthocerotae

Austral Hepaticae XVIII

Falkland Island Hepaticae and Anthocerotae

A Taxonomic and Phylogenetic Study of Telaranea (Lepidoziaceae)

Austral Hepaticae

Austral Hepaticae

Austral Hepaticae 32

A monograph of Clasmatocolea Hepaticae

Austral Hepaticae

Austral Hepaticae