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Your query returned 8 citations.

1.
1994
Spergel, Irving,  Chance, Ron,  Ehrensaft, Kenneth,  Regulus, Thomas,  Kane, Candice,  Laseter, Robert,  Alexander, Alba,  Oh, Sandra . Gang Suppression and Intervention: Community Models, Research Summary. National Youth Gang Suppression and Intervention Program. NCJ 148202, .
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2.
1992
Spergel, Irving,  Ehrensaft, Kenneth,  Alexander, Alba,  Laseter, Robert L. Youth Employment Model. National Youth Gang Suppression and Intervention Program. NCJ 142675, Arlington, VA: National Youth Gang Information Center.
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3.
1992
Spergel, Irving A.,  Ehrensaft, Kenneth . Police Technical Assistance Manual. National Youth Gang Intervention and Suppression Program. NCJ 142665, Arlington, VA: National Youth Gang Information Center.
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4.
1991
Ehrensaft, Kenneth . Prosecutors Model. National Youth Gang Suppression and Intervention Program. NCJ 142679, Arlington, VA: National Youth Gang Information Center.
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5.
1991
Spergel, Irving,  Ehrensaft, Kenneth . Grassroots Organization Model. National Youth Gang Suppression and Intervention Program. NCJ 142689, Arlington, VA: National Youth Gang Information Center.
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6.
1991
Spergel, Irving,  Chance, Ron,  Ehrensaft, Kenneth,  Regulus, Thomas,  Kane, Candice,  Laseter, Robert,  Alexander, Alba,  Oh, Sandra . Executive Summary: Prototype Models. National Youth Gang Suppression and Intervention Program. NCJ 146555, Arlington, VA: National Youth Gang Information Center .
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7.
1991
Spergel, Irving,  Ehrensaft, Kenneth,  Alexander, Alba,  Laseter, Robert L. Youth Employment Technical Assistance Manual. National Youth Gang Suppression and Intervention Program. NCJ 142719, Arlington, VA: National Gang Information Center.
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8.
1991
Ehrensaft, Kenneth,  Spergel, Irving . Police Model. National Youth Gang Suppression and Interevention Program. NCJ 142683, Arlington, VA: National Youth Gang Information Center.
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Results 1 - 8