Bonding in eight ordered clinopyroxenes isostructural with diopside
J. R. Clark, D.E. Appleman, J. J. Papike
1968, Contributions to Mineralogy and Petrology (20) 81-85
Bond distances and angles in isostructural, ordered clinopyroxenes are compared for eight compositions, based on five new and three published crystal-structure refinements from X-ray diffraction data. Unit-cell parameters and configuration of the silicate chains are directly correlated with cation composition and distribution in the M2 and M1 sites. ...
Van vleck paramagnetism in orthorhombic TiO2 (Brookite)
F. E. Senftle, A. N. Thorpe
1968, Physical Review (175) 1144-1146
The magnetic susceptibility of the orthorhombic form of titanium dioxide has been measured from 5 to 300°K. After deducting the temperature-dependent component, which is probably due to defects or impurities, and the free-ion diamagnetic component, the Van Vleck paramagnetism was estimated to be 33×<span...
Crystal Structure of Veatchite
J. R. Clark, C. L. Christ
1968, Die Naturwissenschaften (55) 648
[No abstract available]...
Palaeomagnetism, Potassium-argon ages and petrology of some volcanic rocks
G. B. Dalrymple, A. Cox
1968, Nature (217) 323-326
Geological evidence obtained from samples of rocks from Cocos Island, Costa Rica, seems to agree with the idea that this island could have been a stepping stone for organisms migrating to the Galapagos Islands. ...
The changing seasons--the 1968 spring migration
R. Andrews
1968, Audubon Field Notes (22) 502-504
[Book review] Reilly, Edgar M., Jr. The Audubon Illustrated Handbook of American Birds. McGraw-Hill. 1968. Illus. Pp. 524
Richard C. Banks
1968, Atlantic Naturalist (23) 226-227
[Book review] 'Hawaii's birds,' by Hawaii Audubon Society
C. B. Kepler
1968, The Wilson Bulletin (80) 511
[Letter to the Editor] Kites in the Everglades
P.W. Sykes Jr., W. B. Robertson
1968, Nature (220) 939-940
[Book review] Hanzak, J. The Pictorial Encyclopedia of Birds. Edited by Bruce Campbell, American Consultant Ned R. Boyajian. Crown. 1967. 582 pp., 1,075 photographs, 45 color photos
Richard C. Banks
1968, Atlantic Naturalist (23) 167-169
[Book review] Hindwood, Keith. Australian Birds in Color. East-West Center Press. Honolulu. 1966. Pp. 112
Richard C. Banks
1968, Atlantic Naturalist (23) 122
Slate-colored junco recovery from Michigan
W.T. Van Velzen
1968, Maryland Birdlife (24) 82
[Book review] McClung, Robert. Redbird: The Story of a Cardinal. William Morrow. 1968. Pp. 00. Illus
Richard C. Banks
1968, Atlantic Naturalist (23) 126
Sixty-eighth Christmas bird count. 272. Southern Dorchester County, Md
D. R. Clark Jr.
1968, Audubon Field Notes (22) 187-188
[Book review] Radar Ornithology, by Eric Eastwood
C.S. Robbins
1968, Atlantic Naturalist (23) 234-235
Nest records of the brown thrasher in Maryland
W.T. Van Velzen
1968, Maryland Birdlife (24) 3-9
Report of the state-wide bird count, May 4, 1968
W.T. Van Velzen
1968, Maryland Birdlife (24) 35-43
Migration of a downy woodpecker
W.T. Van Velzen
1968, Maryland Birdlife (24) 115
A survey of chlorinated pesticide residues in black duck eggs
W. L. Reichel, C.E. Addy
1968, Bulletin of Environmental Contamination and Toxicology (3) 174-179
No abstract available....
The season - January, February, March, 1968
C.S. Robbins
1968, Maryland Birdlife (24) 44-47
The canvasback duck (Aythya valisineria): A new host for Plasmodium
R. M. Kocan
1968, Bulletin of the Wildlife Disease Association (4) 86-87
No abstract available....
Third cooperative survey of the California condor
F.C. Sibley, R.D. Mallette, J.C. Borneman, P.S. Dalen
1968, California Fish and Game (54) 297-303
The season - April, May, June, 1968
C.S. Robbins
1968, Maryland Birdlife (24) 73-79
Black-throated sparrow in Kiowa County, Oklahoma
W.T. Van Velzen
1968, Bulletin of the Oklahoma Ornithological Society (1) 26
Probable origin of ciliates found in oral swabbing of doves and pigeons
R. M. Kocan
1968, Journal of Parasitology (54) 1033
No abstract available....
Net hours: A common denominator for the study of bird populations by banders
C.S. Robbins
1968, EBBA [Eastern Bird Banding Association] News (31) 31-35
