| ACROSS
1. South American wood sorrel cultivated for its edible tubers.
4. A graphical recording of the cardiac cycle produced by an electrocardiograph.
7. A bachelor's degree in library science.
11. An emotional response that has been acquired by conditioning.
12. A metric unit of volume or capacity equal to 10 liters.
13. A Gaelic-speaking Celt in Ireland or Scotland or the Isle of Man.
14. An independent agency of the United States government responsible for collecting and coordinating intelligence and counterintelligence activities abroad in the national interest.
15. An organization of countries formed in 1961 to agree on a common policy for the sale of petroleum.
17. A nucleic acid that transmits genetic information from DNA to the cytoplasm.
18. The blood group whose red cells carry both the A and B antigens.
20. African tree having an exceedingly thick trunk and fruit that resembles a gourd and has an edible pulp called monkey bread.
21. A flat-bottomed volcanic crater that was formed by an explosion.
24. Something that hinders as if with bonds v 1.
25. The site of an archeological exploration.
26. A software system that facilitates the creation and maintenance and use of an electronic database.
27. Primitive chlorophyll-containing mainly aquatic eukaryotic organisms lacking true stems and roots and leaves.
31. Gibberish resembling the sounds of a baby.
35. A member of the Siouan people formerly living in the Missouri river valley in NE Nebraska.
39. A pale rose-colored variety of the ruby spinel.
40. A unit of electrical power in an AC circuit equal to the power dissipated when 1 volt produces a current of 1 ampere.
41. A Tibetan or Mongolian priest of Lamaism.
44. The compass point that is one point south of due east.
45. A city in the European part of Russia.
46. An accountant certified by the state.
48. A member of a Mayan people of southwestern Guatemala.
49. A former agency (from 1946 to 1974) that was responsible for research into atomic energy and its peacetime uses in the United States.
50. A suburb of Paris.
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DOWN
1. English scholastic philosopher and assumed author of Occam's Razor (1285-1349).
2. Tropical American trees with palmately compound leaves and showy bell-shaped flowers.
3. A constellation in the southern hemisphere near Telescopium and Norma.
4. The capital and largest city of Japan.
5. A tight-fitting headdress.
6. Fleshy spore-bearing inner mass of e.g. a puffball or stinkhorn.
7. A soft white precious univalent metallic element having the highest electrical and thermal conductivity of any metal.
8. Capable of wounding.
9. A Russian river.
10. Block consisting of a thick piece of something.
16. A compartment in front of a motor vehicle where driver sits.
19. British physicist (born in Austria) who with Lise Meitner recognized that Otto Hahn had produced a new kind of nuclear reaction which they named nuclear fission.
22. A defensive missile designed to shoot down incoming intercontinental ballistic missiles.
23. A federal agency established to regulate the release of new foods and health-related products.
28. 16 ounces.
29. An amino acid that is found in the central nervous system.
30. A loose sleeveless outer garment made from aba cloth.
32. Tired to the point of exhaustion.
33. A brief description given for purposes of identification.
34. An analytic or interpretive literary composition.
36. A Chadic language spoken south of Lake Chad.
37. The biblical name for ancient Syria.
38. Type genus of the Alcidae comprising solely the razorbill.
42. Any of various primates with short tails or no tail at all.
43. (British) A waterproof raincoat made of rubberized fabric.
47. Functioning correctly and ready for action.
48. A piece of furniture that provides a place to sleep.
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