121
122
123
Published [1981]

Report Number(s): APA 402

Link to full text
124
Published [1981]

Report Number(s): APA 401 SUS 54

Link to full text
125
129
Published [1982]

Report Number(s): APA 421 APA 1321 SUS 55

Link to full text
130
131
by Helm, Dot.
Published [1985]

Report Number(s): APA 2932

Link to full text
132
133
Published [1980]

Report Number(s): APA 1301 SUS 330

Link to full text
135