From publisher blurb:
From the misty depths of the Congo, to the endless greenery of the Amazon, jungles have captivated mankind from our very beginnings. But a jungle is more than a mysterious and impenetrable wall of greenery- it is teeming with life, danger, and opportunity for the intrepid. This sourcebook contains:
Types And General Qualities Of Jungles
Jungle Illnesses: Malaria, Cholera, Dysentery, Dengue Fever, Yellow Fever
Jungle Parasites: Amoebas, Leeches, Hookworms, Ticks, Guinea Worms
Specific Types Of Jungle: Jungle Tropical Rainforest, Monsoon Forest, Swamps, Mangrove Swamps, Palm Swamps,
Jungle Feats: Gone Native, Forage, Poach
11 All New Adventure Seeds
New Advanced Class: Guerilla
New Creature: Great Crimson Ape
This PDF is just the sort of thing needed for GMs to add depth to any great d20 Modern campaign world, including Haven: City of Bronze and Victory: War of Bronze.