A Swift Guide to Butterflies of North America, Second EditionButterflies of Pennsylvania: A Field Guide
2017 ◽
Vol 63
(4)
◽
pp. 261-262
2016 ◽
Vol 118
(975)
◽
pp. 332-334
2013 ◽
Vol 127
(3)
◽
pp. 276
1981 ◽
Vol 31
(2)
◽
pp. 162-162
1958 ◽
Vol 128
(3339)
◽
pp. 1620-1620
Lorus J. Milne
◽
Margery Milne
2011 ◽
Vol 125
(2)
◽
pp. 167
1951 ◽
Vol 34
(3)
◽
pp. 122
Lewis Berner
◽
Alexander B. Klots
1996 ◽
Vol 33
(07)
◽
pp. 33-3903-33-3903
2000 ◽
Vol 37
(11)
◽
pp. 37-6262-37-6262
2001 ◽
Vol 38
(09)
◽
pp. 38-5017-38-5017
2002 ◽
Vol 39
(08)
◽
pp. 39-4571-39-4571