1.
 |  | Title: A Field Guide to Western Trees (Peterson Field Guides: 44)
by Olivia Petrides, George A. Petrides, Roger Tory Peterson
ISBN: 0395904544
Publisher: Houghton Mifflin Co
Pub. Date: 25 July, 1998
List Price: $20.00
Amazon.com Price: $14.00 |
2.
|  | Title: First Guide to Trees (Peterson Field Guides)
by Janet Wehr, Olivia Petrides, George A. Petrides, Roger Tory Peterson
ISBN: 0395911834
Publisher: Houghton Mifflin Co
Pub. Date: 15 May, 1998
List Price: $5.95
Amazon.com Price: $5.95 |
3.
|  | Title: Trees
by Janet Wehr, Olivia Petrides, George A. Petrides, Roger Tory Peterson
ISBN: 0395829984
Publisher: Houghton Mifflin Co
Pub. Date: 25 October, 1996
List Price: $8.95
Amazon.com Price: $8.95 |
4.
|  | Title: Trees of the Pacific Northwest: Including Oregon, Washington, Idaho, Nw. Montana, British Columbia, Yukon, & Alaska (Backpacker Field Guide Series)
by George A. Petrides, Olivia Petrides
ISBN: 096466741X
Publisher: Explorer Press
Pub. Date: March, 1999
List Price: $12.95
Amazon.com Price: $12.95 |
5.
|  | Title: Trees of the California Sierra Nevada: A New and Simple Way to Identify and Enjoy Some of the World's Most Beautiful and Impressive Forest Trees in a Mountain Setting of Incomparable (Backpacker Field Guide Series , No 1)
by George A. Petrides, Olivia Petrides
ISBN: 0964667401
Publisher: Houghton Mifflin Co
Pub. Date: March, 1997
List Price: $9.95
Amazon.com Price: $9.95 |
6.
|  | Title: Trees of the Rocky Mountains and Intermountain West
by George A. Petrides, Olivia Petrides
ISBN: 0964667428
Publisher: Explorer Press
Pub. Date: March, 2000
List Price: $14.95
Amazon.com Price: $14.95 |
7.
|  | Title: Trees of the American Southwest
by George A. Petrides, Olivia Petrides
ISBN: 0964667436
Publisher: Explorer Press
Pub. Date: September, 2000
List Price: $14.95
Amazon.com Price: $14.95 |
