1
A handbook of the world's conifers. Volume I [E-Book] /
Subject (ZB): ...Conifers -- Handbooks, manuals, etc....

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2
An atlas of the world's conifers : an analysis of their distribution, biogeography, diversity, and conservation status [E-Book] /
3
The world of northern evergreens / [E-Book]
Subject (ZB): ...Conifers North America....

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4
Filicineae, Gymnospermae, and other monocots, excluding Cyperaceae : ferns, conifers, and other monocots, excluding sedges [E-Book] /