✦ LIBER ✦

Superimposed punching of numerical codes on hand-sorted punch cards

✍ Scribed by Perry, James W.

No coin nor oath required. For personal study only.

📜 SIMILAR VOLUMES

A hand-sort punch card system for the ev

✍ Robert L. Gingell; John A. Grant; Marvin Cornblath 📂 Article 📅 1972 🏛 Elsevier Science 🌐 English ⚖ 273 KB