|
Mexican hat, Ratibida columnifera. Photo by Richard Snow. |
Mader,
Sylvia S. 2011 Laboratory
Manual to accompany Inquiry into Life,
15th
ed., McGraw-Hill, NY.
Laboratory
9 pp 104-110, 112-117
Laboratory
25 pp 348, 352, 354-360
Laboratory
26 pp 365-370, 374