What does PSL stand for?

Environmental Study Center (SAUS)

Laser Sailcraft - NCIC boat manufacturer code (NCIC)

Pacific Star Line (SAUS)

Pakistan Shipping Line (SAUS)

Paleobotanical Society of Lucknow (SAUS)

Palouse Silt Loam - Agronomy

Parallel Strand Lumber

Parasternal Line - Anatomy (MAE)

Parti Social-Liberal - Algeria - Political party (EY)

Parts Selection List (SPST)

Patterson Strategy Letter (SAUS)

Paymaster-Sub-Lieutenant - Navy - British

PD Service Lage (SAUS)

Peabody Short Line R. R. - Army

Percent Stroke Length - Medicine (STED)

Permanent Seat License (SAUS)

Perpendicular to the Sun Line (SAUS)

Personal - Telegraphy (PCTE)

Personal Safety Light - Police and security equipment

Personnel Skill Levels (AAG)

Perth - Scotland - Airport symbol (AD)

Peruvian State Line (SAUS)

Petroleum Ether-Soluble Lipid

Phase Sequence Logic (IAA)

Phase Sequency Logic (SAUS)

Philharmonic Society of London (SAUS)

Photographic Science Laboratory - Navy

Photostimulated Luminescence - Physics

Physical Science Libraries (SAUS)

Physical Sciences Laboratory - Bethesda, MD - National Institutes of Health (GRD)

Physical Sciences Laboratory - University of Wisconsin - Madison, New Mexico State University - Research center

Pipe Sleeve

Pocket Select Language - Burroughs Corp.

Polskie Stronnictwo Ludowe - Polish Peasant Party - Political party (PPE)

Poly-crystalline Silicon Layer (SAUS)

Polystyrene Latex (PDAA)

Portable Standard List Processing - Computer science

Port Service Ltd. (SAUS)

Potassium, Sodium Chloride, Sodium Lactate - Solution (AAMN)

Potential Source List (MCD)

Power and Signal List - Telecommunications (TEL)

Power Source Logic

Power Systems Laboratories (ACAE)

Practical Storage Life

Prednisolone - Medicine (EDAA)

Prescribed Substance License - Canadian Nuclear Safety Commission (FOTI)

Pressure Seal (NASA)

Pressure Sensitive Label (SAUS)

Pressure-Sensitive Label

Pretoria State Library (SAUS)

Primary Standards Laboratory

Priority Substances List - Ecology (FOTI)

Private Sector Liquidity

Problem-Solving Language

Problem Specification Language

Problem Statement Language - Computer science (IAA)

Processor Status Longword - Computer science (VLIE)

Process Simulation Language - Computer science (TEL)

Process Status Longword - Number - Computer science (BYTE)

Professionnel Air Systems - France - ICAO designator (FAAC)

Programming Script Language

Programming Support Library

Program Statement Language

Program Structuring Language (SAUS)

Program Supply Logic Unit (SAUS)

Program Support Letter (SAUS)

Program Support Library (MCD)

Project Support Laboratory - Military (CAAL)

Propellant Seal

Propulsion Systems Laboratory - USATACOM

Protocol Source Library

Public School League - Sports

Public Software Library (SAUS)

Public Storage Properties X, Inc. - AMEX symbol (SAG)

Public Storage Prop`A' X - AMEX symbol

Puerto Rican Sign Language - Language code (ETLW)

Pycnocline Scattering Layer (DNAB)

South Hills Library Association, Pittsburgh, PA - OCLC symbol (OCLC)