Here are some subject headings to use when searching library catalogs:
The Community Food Forest Handbook by 
Creating a Forest Garden by 
Designing Urban Agriculture by 
Eat Up by 
The Edible Asian Garden by 
Edible Estates by 
The Edible Flower Garden by 
The Edible Front Yard by 
The Edible Herb Garden by 
Edible Landscaping by 
The Edible Mexican Garden by 
The Edible Salad Garden by 
Fruit Trees in Small Spaces by 
Groundbreaking Food Gardens by 
Landscaping with Fruit by 
The New Low-Maintenance Garden by 
Permaculture Garden by 
The Permaculture Handbook by 
Shamanic Gardening by 
Sugar Snaps and Strawberries by 
Urban Farming by 
The Vegetable Gardener's Guide to Permaculture by 
Your Farm in the City by 