The session law for L. 1971, c. 3 is available online only from the Rutgers University School of Law Camden website. It is available as part of a scanned collection of images from the original printed books. The link below will take you to the first page of the New Jersey Legislature session volume 194_2 that contains the law. From there, use the available navigation tools to get to the appropriate chapter.
CLICK HERE FOR THE SESSION LAWS
Legislative history for L. 1971, c. 3 is available from the New Jersey State Library here