161:
166:
70:
65:
60:
55:
50:
40:
35:
30:
25:
20:
97:
136:
123:
110:
176:
171:
8:
114:
127:
101:
140:
155:
85:
This category has the following 4 subcategories, out of 4 total.
15:
153:
154:
80:
13:
87:
79:
14:
188:
162:Engines by decade of introduction
167:Products introduced in the 1970s
1:
98:1970s aircraft piston engines
7:
10:
193:
137:1970s turboprop engines
124:1970s turbojet engines
111:1970s turbofan engines
177:1970s introductions
172:1970s in technology
184:
142:
129:
116:
103:
192:
191:
187:
186:
185:
183:
182:
181:
152:
151:
150:
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148:
147:
144:
143:
131:
130:
118:
117:
105:
104:
78:
77:
76:
75:
12:
11:
5:
190:
180:
179:
174:
169:
164:
146:
145:
135:
134:
132:
122:
121:
119:
109:
108:
106:
96:
95:
92:
89:
88:
83:
74:
73:
68:
63:
58:
53:
48:
43:
38:
33:
28:
23:
17:
16:
9:
6:
4:
3:
2:
189:
178:
175:
173:
170:
168:
165:
163:
160:
159:
157:
138:
133:
125:
120:
112:
107:
99:
94:
93:
90:
86:
82:Subcategories
81:
72:
69:
67:
64:
62:
59:
57:
54:
52:
49:
47:
44:
42:
39:
37:
34:
32:
29:
27:
24:
22:
19:
18:
84:
45:
156:Categories
115:(20 P)
141:(1 P)
128:(8 P)
102:(5 P)
71:2020s
66:2010s
61:2000s
56:1990s
51:1980s
46:1970s
41:1960s
36:1950s
31:1940s
26:1930s
21:1920s
158::
139:
126:
113:
100:
91:A
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